HEALTHCORE MEDICAL SOLUTIONS INC
8-K, 1999-07-09
PERSONAL SERVICES
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      As filed with the Securities and Exchange Commission on July 9, 1999


                                   ----------


                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549


                                    FORM 8-K


                                 CURRENT REPORT

                       PURSUANT TO SECTION 13 OR 15(D) OF
                       THE SECURITIES EXCHANGE ACT OF 1934


         Date of Report (Date of Earliest Event Reported): JULY 1, 1999


                       HEALTHCORE MEDICAL SOLUTIONS, INC.
             (Exact name of registrant as specified in its charter)



             DELAWARE                       0-22947              43-1771999
 (State or other jurisdiction of    (Commission File Number)  (I.R.S. Employer
  incorporation or  organization)                            Identification No.)

       11904 BLUE RIDGE BLVD
        GRANDVIEW, MISSOURI                                        64030
 (Address of principal executive offices)                       (Zip Code)


       Registrant's telephone number, including area code: (816) 736-4900


                                 NOT APPLICABLE
          (Former name or former address, if changed since last report)




                             Exhibit Index on Page 4


<PAGE>


ITEM 5.   OTHER EVENTS.



         On July 1, 1999, HealthCore Medical Solutions, Inc., a Delaware
corporation ("HealthCore"), and Adatom, Inc., a privately held California
corporation ("Adatom"), entered into an Agreement and Plan of Merger (the
"Merger Agreement"), under which Adatom will be merged with and into HealthCore
(the "Merger"), with HealthCore being the surviving corporation under the name
Adatom.com, Inc. (the "Surviving Corporation") All existing Class A common stock
and warrants of HealthCore will remain outstanding. The Class B common stock of
HealthCore will be eliminated and the Class A common stock of HealthCore will be
retitled as common stock. Adatom stockholders will receive common stock of the
Surviving Corporation representing approximately 77.5% of the Surviving
Corporation subject to adjustment in certain circumstances. The Merger is
expected to be a tax-free reorganization under the Internal Revenue Code of
1986, as amended.

         Consummation  of the  Merger  is  subject  to a  number  of  conditions
         including, without limitation, approval of the Merger by the
stockholders of
HealthCore and Adatom.

         The press release issued by HealthCore and Adatom with respect to the
announcement of the Merger Agreement is included as Exhibit 99 hereto.

         The foregoing descriptions of and references to the Merger Agreement
and the Press Release are qualified in their entirety by reference to the
complete texts of the Merger Agreement and Press Release, which are filed as
exhibits to this Current Report on Form 8-K.


ITEM 7. FINANCIAL STATEMENTS, PRO FORMA FINANCIAL INFORMATION AND EXHIBITS.

EXHIBITS. The following exhibits are filed herewith:

NO.                                   DESCRIPTION
- --                                    -----------
2              Agreement and Plan of Merger, dated July 1, 1999, between
               HealthCore and Adatom.
99             Press release, dated July 1, 1999.



                                        2

<PAGE>


                                   SIGNATURES

               Pursuant to the  requirements  of the Securities  Exchange Act of
1934, as amended, the registrant has duly caused this Current Report on Form 8-K
to be signed on its behalf by the undersigned hereunto duly authorized.

Date:  July 8, 1999
                                  HEALTHCORE MEDICAL SOLUTIONS, INC.

                                  By: /s/ Neal J. Polan
                                      -------------------------------------
                                      Neal J. Polan
                                      Chairman of the Board and Chief Executive
                                      Officer




                                       3
<PAGE>


                               EXHIBIT INDEX

NO.                                 DESCRIPTION
- --                                  -----------
 2            Agreement and Plan of Merger, dated July 1, 1999, between
              HealthCore and Adatom.
99            Press release, dated July 1, 1999.





                                       4



                                    EXHIBIT 2


                          AGREEMENT AND PLAN OF MERGER

         AGREEMENT AND PLAN OF MERGER (this  "Agreement") dated July 1, 1999, by
and  between  HEALTHCORE  MEDICAL  SOLUTIONS,   INC.,  a  Delaware   corporation
("HealthCore"), and ADATOM, INC., a California corporation ("Adatom").

                              W I T N E S S E T H:

         WHEREAS,  the  respective  boards of directors of HealthCore and Adatom
have  determined  that the  consummation  of the merger (the "Merger") of Adatom
with and into  HealthCore upon the terms and subject to the conditions set forth
in this  Agreement  would be in the best interest of both  HealthCore and Adatom
and their  respective  shareholders,  and each such board has duly  approved the
Merger.

         NOW, THEREFORE, the parties hereby agree as follows:

         ALL TERMS USED BUT NOT OTHERWISE DEFINED HEREIN SHALL HAVE THE MEANINGS
ASCRIBED TO THEM IN SECTION 10.1 HEREOF.


                                    ARTICLE I
                                   THE MERGER

         1.1 THE MERGER.  Upon the terms and subject to the conditions set forth
in this  Agreement,  and in  accordance  with the  applicable  provisions of the
Delaware  General  Corporation  Law  (the  "DGCL")  and the  California  General
Corporation Law (the "CGCL"),  at the Effective Time (as  hereinafter  defined),
the Merger shall be effectuated. Upon and after the Effective Time, the separate
corporate  existence of Adatom shall cease and HealthCore shall be the surviving
corporation  in the Merger  (the  "Surviving  Corporation").  All of the rights,
privileges, powers, immunities,  purposes and franchises of Adatom shall vest in
the Surviving Corporation,  and all of the debts,  liabilities,  obligations and
duties of Adatom shall become the debts, liabilities,  obligations and duties of
the Surviving Corporation.

         1.2 CLOSING.  The closing of the Merger (the "Closing") will take place
at the offices of Epstein Becker & Green,  P.C., 250 Park Avenue,  New York, New
York 10177, at 10:00 a.m. on the third Business Day following the  satisfaction,
or waiver by the party entitled to the benefit of such condition, of each of the
conditions  set forth in Article VII, or at such other  place,  time and date as
Adatom and  HealthCore  may agree in  writing.  The time and date upon which the
Closing occurs is referred to herein as the "Closing Date".

         1.3 EFFECTIVE  TIME. On the Closing Date,  Adatom and HealthCore  shall
cause a  certificate  of merger (the  "Certificate  of Merger") to be  prepared,
executed  and filed with the  Secretary  of State of the States of Delaware  and
California  in  accordance  with the  applicable


<PAGE>

provisions  of the DGCL and the  CGCL,  and  shall  make all  other  filings  or
recordings  as may be  required  under the DGCL and the CGCL.  The Merger  shall
become  effective at such time as the  Certificate  of Merger is duly filed with
the Secretary of State of the States of Delaware and California  (the "Effective
Time").

         1.4  CERTIFICATE  OF  INCORPORATION  AND BY-LAWS.  The  Certificate  of
Incorporation  of HealthCore  shall be the Certificate of  Incorporation  of the
Surviving  Corporation until thereafter changed or amended as provided herein or
therein, or by applicable laws, except that (i) Article FIRST of the Certificate
of  Incorporation  shall be amended  and  restated  in its  entirety as follows:
"FIRST:  The name of the  Corporation  is  Adatom.com,  Inc.",  and (ii) Article
FOURTH,  with  respect to the  designation  of the various  classes,  and rights
associated therewith,  of the capital stock of HealthCore,  shall be amended and
restated in its  entirety as set forth on  Schedule  1.4 hereof.  The By-laws of
HealthCore  shall be the By-laws of the Surviving  Corporation  until thereafter
changed or amended as provided therein or by applicable law.

         1.5  DIRECTORS  AND  OFFICERS.  At the  Effective  Time,  the number of
directors  on the  Board of  Directors  of the  Surviving  Corporation  shall be
increased to five (5), and shall  consist of (i) the three (3)  directors on the
Board of  Directors  of  Adatom  at the  Effective  Time,  (ii)  one (1)  Adatom
designee,  and (iii) the  Chairman of the Board and Chief  Executive  Officer of
HealthCore,  Neal J. Polan  ("Polan").  The officers of Adatom at the  Effective
Time shall be the  officers of the  Surviving  Corporation.  The  directors  and
officers of the Surviving  Corporation  shall hold office until their respective
successors  are duly elected or appointed  and  qualified or until their earlier
death,   resignation   or  removal  in  accordance   with  the   Certificate  of
Incorporation and By-laws of the Surviving Corporation

                                   ARTICLE II
                        EFFECT OF MERGER ON CAPITAL STOCK

         2.1  EFFECT ON ADATOM  CAPITAL  STOCK,  OPTIONS  AND  WARRANTS.  At the
Effective  Time,  by virtue of the Merger and  without any action on the part of
the holder thereof:

         (a)  CONVERSION  OF SHARES OF ADATOM  COMMON  STOCK.  Each  issued  and
outstanding  share of Adatom common  stock,  no par value per share (the "Adatom
Common Stock") shall be converted into the right to receive the Per Share Merger
Consideration (as hereinafter  defined),  subject,  however, to the execution by
each of the holders (other than Polan) of the shares of Adatom Common Stock of a
lock-up agreement in form and substance  reasonably  satisfactory to Adatom (the
"Adatom  Lock-up  Agreement")  covering  the  shares  received  by  such  Adatom
shareholders in respect of the Per Share Merger Consideration (collectively, the
"Adatom  Newly  Issued  Shares"),   other  than  the  Polan  Adatom  Shares  (as
hereinafter defined), which shall be subject to a lock-up period pursuant to the
terms of the HealthCore Lock-up Agreements (as hereinafter defined).  The Adatom
Lock-Up  Agreement  shall  provide,  among other  things,  that the Adatom Newly
Issued Shares shall be subject to a six (6) month lock-up, prohibiting the sale,
assignment or transfer thereof during such six (6) month period.  The holders of
certificates  representing  shares of Adatom Common Stock (each a "Certificate",
and  collectively,  the  "Certificates")  shall  cease to have any  rights  with
respect to

                                       2
<PAGE>

such  shares  except  the right to  receive  the  applicable  Per  Share  Merger
Consideration, without interest, upon surrender of the Certificate in accordance
with Article IV hereof.

         (b) TREASURY SHARES. Each share of Adatom Common Stock, if any, held in
the treasury by Adatom shall be canceled and retired and cease to exist, without
any conversion thereof.

         (c) ADATOM  OPTIONS AND WARRANTS.  Each issued and  outstanding  option
(each an "Adatom Option") and warrant (each an "Adatom Warrant") exercisable for
shares of Adatom Common Stock shall be converted  into an option or warrant,  as
applicable,  exercisable for shares of HealthCore  Common Stock,  $.01 par value
per share (the "HealthCore  Common Stock") with the same terms and conditions as
the Adatom  Option or the Adatom  Warrant,  as the case may be,  except that the
exercise price and the number of shares of HealthCore Common Stock issuable upon
exercise  of  such  options  and  warrants  shall  be  divided  and  multiplied,
respectively, by the Per Share Merger Consideration.

         2.2 EFFECT ON CAPITAL STOCK OF  HEALTHCORE.  At the Effective  Time (a)
each issued and outstanding  share of HealthCore Class A Common Stock, par value
$.01 per share (the  "HealthCore  Common  Stock"),  and each  option and warrant
exercisable for shares of HealthCore Common Stock, shall remain outstanding with
the same rights, terms and conditions attendant thereto immediately prior to the
Effective  Time;  provided  that such  HealthCore  Class A Common Stock shall be
reclassified  as "Common Stock" in accordance with the provisions of Section 1.4
hereof;  and (b) each issued and outstanding  share of HealthCore Class B Common
Stock, par value $.01 (the "HealthCore Class B Common Stock") shall be converted
into  one  (1)  share  of  HealthCore  Common  Stock.  Notwithstanding  anything
contained  herein to the  contrary,  if a  Certificate  is held by a  Dissenting
Shareholder (as hereinafter defined), such Dissenting Shareholder shall have the
rights with  respect  thereto as set forth in Section 4.4 hereof and as provided
by applicable law.

                                   ARTICLE III
                    CALCULATION OF PER MERGER CONSIDERATION;
                     ADJUSTED PER SHARE MERGER CONSIDERATION

         3.1 Calculation of Per Share Merger Consideration.

         (a) BASE  CALCULATION.  The "Per Share Merger  Consideration"  shall be
defined as that  number of shares of  HealthCore  Common  Stock equal to (i) the
difference  between  (A)  (1)  the  Outstanding   HealthCore  Common  Stock  (as
hereinafter  defined),  divided by (2) .225, and (B) the Outstanding  HealthCore
Common  Stock,   divided  by  (ii)  the  Outstanding  Adatom  Common  Stock  (as
hereinafter defined),  subject to adjustment as hereinafter set forth (the total
number of shares of  HealthCore  Common Stock  issuable  hereunder,  the "Merger
Consideration").

         (b) ADATOM COMMON STOCK  OUTSTANDING.  For purposes of calculating  the
Per Share Merger  Consideration,  the "Outstanding Adatom Common Stock" shall be
defined  as the  total  number of shares  of  Adatom  Common  Stock  outstanding
immediately  prior to the  Closing


                                       3

<PAGE>

which shall be deemed to include  (i) all  outstanding  shares of Adatom  Common
Stock (including, without limitation, the shares of Adatom Common Stock issuable
to Polan as described in Section 6.1(c)  hereof),  and (ii) all shares of Adatom
Common Stock  underlying (A) the options and warrants to purchase such shares of
Adatom  Common  Stock,  (B) the  shares of Adatom  Common  Stock  into which the
convertible  bridge  notes (the  "Convertible  Notes")  placed by Jesup & Lamont
Securities   Corporation   ("Jesup  &  Lamont")  are  convertible  prior  to  or
simultaneously  with the  Closing,  and the shares  issuable  upon  exercise  of
warrants to purchase the Adatom  Common Stock issued by Adatom to Jesup & Lamont
as compensation  under the terms of the Adatom Engagement Letter (as hereinafter
defined),  and (C)  shares of Adatom  Common  Stock  issued or  issuable  to the
Brokers (as defined in Section 5.1(u) hereof).

         (c) HEALTHCORE  COMMON STOCK  OUTSTANDING.  For purposes of calculating
the Per Share Merger  Consideration,  the "Outstanding  HealthCore Common Stock"
shall be  defined  as the total  number of shares  of  HealthCore  Common  Stock
outstanding  immediately  prior to the Closing  which shall be deemed to include
(i)  all  outstanding  shares  of  HealthCore  Common  Stock  (other  than,  and
specifically  excluding,  eighty (80) percent of the shares of HealthCore Common
Stock  owned by the Escrow  Shareholders  who have  executed  and  delivered  to
HealthCore,  as of the Closing Date, the Termination  Agreements,  and which are
held  in  escrow  pursuant  to  the  terms  of the  Escrow  Agreement,  as  such
capitalized  terms are  defined in Section 6.5  hereof),  and (ii) all shares of
HealthCore Common Stock underlying (A) the options and warrants to purchase such
shares of Class A Common  Stock with an exercise  price of $1.25 or less,  other
than the warrants issued to Jesup & Lamont as compensation pursuant to the terms
of that certain engagement letter (the "HealthCore  Engagement  Letter"),  dated
April 27,  1999,  between  HealthCore  and  Jesup &  Lamont,  a copy of which is
attached hereto as Exhibit A, and other than, and specifically excluding, eighty
(80) percent of the shares of HealthCore  Common Stock  underlying  that certain
warrant to purchase  142,000  shares of  HealthCore  Common Stock held by Polan,
provided  Polan shall have  executed  and  delivered  to  HealthCore,  as of the
Closing  Date,  an  agreement  in  substantially  the  form  of the  Termination
Agreements,  and (B) the options or warrants  issued on or after the date hereof
in  consideration  for the  settlement of certain  obligations  of HealthCore to
employees  and third  party  creditors  of  HealthCore  in  accordance  with the
provisions of Section 6.2(d) hereof.

         3.2 ADJUSTMENT TO PER SHARE MERGER CONSIDERATION.  The Per Share Merger
Consideration shall be subject to adjustment as follows:

         (a) CLOSING  CASH  AMOUNT.  In the event the cash assets of  HealthCore
immediately  prior to the Closing (the  "Closing Cash Amount") are less than Two
Million Eight Hundred Fifty Thousand  ($2,850,000)  Dollars,  then the number of
shares of HealthCore Common Stock issued to the holders of record on the Closing
Date of  Outstanding  Adatom  Common Stock other than Polan (the "Adatom  Former
Shareholders")  shall be increased as follows:  first,  subtract from twenty-two
and one-half  (22.5%)  percent (the  "HealthCore  Post Merger  Percentage")  the
product of the  difference  between  (i)  $2,850,000  and (2) the  Closing  Cash
Amount,  multiplied by .00000309 (such difference being the "New HPMP"); second,
calculate  the  percentage  obtained  by  dividing  the  HealthCore  Post Merger
Percentage  by the New HPMP and  subtracting  one hundred  (100%)  percent  (the
difference  being the  "Margin  Percentage");  and  third,  multiply  the Margin
Percentage by the number of shares of  HealthCore

                                       4

<PAGE>

Common  Stock which  would have been  outstanding  immediately  after the Merger
pursuant  to  Section  3.1 (such  product  being the  "Increased  Shares").  For
purposes  of  calculating  the new Per Share  Merger  Consideration,  divide the
number of Increased Shares by the Outstanding  Adatom Common Stock, and add that
number to the Per Share  Merger  Consideration.  At the time of the Merger,  and
without  necessity  of any further  action,  Polan shall  transfer  and shall be
deemed to have  transferred  to the Adatom  Former  Shareholders,  on a pro rata
basis,  the  number of shares of  HealthCore  Common  Stock  that he would  have
received as his pro rata percentage of the Increased Shares had he been included
in the adjustment to the Per Share Merger  Consideration  described above. Polan
shall have no  ownership  interest of any kind in such  shares at any time,  but
shall hold them in trust for the other  holders  of  Outstanding  Adatom  Common
Stock.  For the purposes of this section the Closing Cash Amount shall be deemed
to include (i) all cash on hand,  (ii) the  aggregate  consideration  payable to
HealthCore  upon  the  exercise  of all  outstanding  options  and  warrants  of
HealthCore as of the date hereof having an exercise price not greater than $1.25
per share;  (iii) the  aggregate  consideration  payable to  HealthCore  for the
purchase of shares of  HealthCore  Common Stock upon the exercise of options and
warrants to purchase  the same,  up to an aggregate  maximum of Thirty  Thousand
(30,000)  shares,  issued on or after the date hereof in  consideration  for the
settlement  of certain  obligations  of  HealthCore to employees and third party
creditors of  HealthCore,  provided  that only $1.25 shall be  includable in the
Closing Cash Amount for options and warrants with an exercise price in excess of
$1.25,  (iv) the aggregate amount of prepaid expenses paid by HealthCore for the
benefit  of the  Surviving  Corporation,  (v) the  principal  amount  loaned  by
HealthCore  to  Adatom  for  bridge  financing  as  evidenced  by  that  certain
Promissory Note (the "Note"),  dated April 27, 1999, executed by Adatom in favor
of  HealthCore,  (vi) the  aggregate  amount of any cash  payments made to Polan
pursuant to the terms of Paragraph  4(c) of that certain  Employment  Agreement,
dated September 30, 1998,  between  HealthCore and Polan, as amended,  (vii) the
aggregate  sum of any and all  reasonable  Transaction  Expenses  (as defined in
Section 10.5  hereof) paid by  HealthCore  through the Closing  Date;  provided,
however,  that Adatom shall have approved of any Transaction Expense (other than
legal,  accounting  and investment  banker fees and expenses,  provided that the
fees payable in connection with the  preparation of a fairness  opinion shall be
commensurate with the fair market value for such services)  incurred and paid by
HealthCore following the execution hereof, which, individually,  is in excess of
Twenty-Five  Thousand  ($25,000)  Dollars;  and (viii) the  aggregate sum of any
deferred  payments to be received by HealthCore  within one hundred twenty (120)
days  following  the  Closing  in  connection  with the  sale of the  HealthCore
Business (as hereinafter  defined).  The Closing Cash Amount shall be reduced by
the  liquidated  sum of the accrued but unpaid  liabilities of HealthCore on the
Closing Date other than, and specifically excluding,  (i) any and all reasonable
Transaction  Expenses incurred by HealthCore prior to the Closing Date, and (ii)
any liabilities  that Adatom and HealthCore  mutually agree shall be excluded as
set forth on  Schedule  3.2(a)  hereof,  as amended  on the  Closing  Date.  The
adjustment  to the Per Share  Merger  Consideration  set  forth in this  Section
3.2(a) shall be made on the Closing Date.

         (b) INDEMNIFICATION OBLIGATIONS. In the event the Surviving Corporation
shall be obligated to indemnify (i) the holders of record on the Closing Date of
the shares of  Outstanding  Adatom  Common  Stock other than Polan (the  "Adatom
Former  Shareholders"),  or (ii) the  holders  of record on the  Indemnification
Adjustment  Date (as  hereinafter  defined) of the shares of Common Stock in the
Surviving Corporation, other than, and specifically excluding,


                                       5

<PAGE>
the Adatom Former  Shareholders (the "HealthCore Former  Shareholders"),  as the
case may be, in respect of the Net Indemnification Amount (as defined in Section
8.5 hereof), the Surviving  Corporation shall issue to such party, on a pro rata
basis,  the  number  of  shares of  Common  Stock of the  Surviving  Corporation
calculated  as  follows:   first,  subtract  from  the  HealthCore  Post  Merger
Percentage the product of the Net Indemnification Amount multiplied by .00000309
(such  difference  being the  "Indemnification  HPMP");  second,  calculate  the
percentage  obtained  by  dividing  the  HealthCore  Merger  Percentage  by  the
Indemnification  HPMP and subtracting one hundred (100%) percent (the difference
being  the  "Indemnification  Margin  Percentage");   and  third,  multiply  the
Indemnification  Margin  Percentage by the number of shares of HealthCore Common
Stock which were  outstanding  immediately  after the Merger purcuant to Section
3.1,  including any adjustment in respect of the Closing Cash Amount pursuant to
Section 3.2(a) hereof (such product being the "Net Indemnification Shares"). The
Net Indemnification  Shares shall be divided among, in the case of the Surviving
Corporation's indemnification of the (A) Adatom Former Shareholders,  the Adatom
Former  Shareholders  based on the  number  of  shares  of  Common  Stock of the
Surviving   Corporation   held  by  the  Adatom  Former   Shareholders   on  the
Indemnification  Adjustment  Date, or (B) HealthCore  Former  Shareholders,  the
HealthCore Former  Shareholders based on the number of shares of Common Stock of
the Surviving  Corporation  outstanding on the Indemnification  Adjustment Date,
excluding  the shares of Common Stock of the Surviving  Corporation  held by the
Adatom Former  Shareholders.  The  indemnification  adjustment set forth in this
Section  3.2(b) shall be made  thirteen  (13) months  following the Closing Date
(the  "Indemnification  Adjustment  Date") in accordance  with the provisions of
Article VIII hereof.

                                   ARTICLE IV
                         PAYMENT OF MERGER CONSIDERATION

         4.1 DELIVERY OF CERTIFICATES.  As soon as reasonably  practicable after
the Effective Time, and upon surrender of a Certificate for  cancellation to the
Surviving  Corporation,  together  with  such  documents  as may  reasonably  be
required by the Surviving  Corporation,  each holder of a  Certificate  shall be
entitled to receive,  and the Surviving  Corporation  shall issue and deliver to
such holder, in exchange therefor certificates representing shares of HealthCore
Common Stock,  rounded up to the nearest  whole number,  equal to the product of
(A) the number of shares of Adatom Common Stock represented by such Certificate,
multiplied by (B) the Per Share Merger  Consideration,  and the  Certificate  so
surrendered  shall  forthwith be canceled.  If  certificates  for the HealthCore
Common Stock deliverable hereunder are to be issued in a name other than that in
which the  Certificate  surrendered  for exchange is  registered,  it shall be a
condition of such issuance that the Certificate so surrendered shall be properly
endorsed,  with the  signature  guaranteed,  or  otherwise  in  proper  form for
transfer and that the party  requesting such issuance shall pay to the Surviving
Corporation any transfer or other taxes required by reason thereof, and shall be
deemed (other than Polan) to be an Adatom Former Shareholder for the purposes of
this  Agreement,   including,  without  limitation,  under  the  indemnification
provisions  set forth in  Sections  3.2(b) and Article  VIII of this  Agreement.
Until surrendered as contemplated by this Section 4.1, after the Effective Time,
each Certificate shall represent only the right to receive, upon such surrender,
the applicable Per Share Merger Consideration.

                                       6
<PAGE>

         4.2  DISTRIBUTIONS.  Each holder,  upon  surrender of a Certificate  as
herein provided and acceptance  thereof by the Surviving  Corporation,  shall be
entitled to payment of all dividends or other  distributions or payments made or
payable  with  respect to  HealthCore  Common Stock with a record date after the
Effective  Time and  prior  to the date of  surrender  of the  Certificate,  all
without  interest,  based upon the number of shares of  HealthCore  Common Stock
issued to such holder in payment of the Per Share Merger Consideration.

         4.3 NO FURTHER  TRANSFERS.  After the Effective Time, there shall be no
further  transfer  of  Certificates  on the books and  records  of Adatom or its
transfer agent

         4.4 APPRAISAL RIGHTS.  Notwithstanding anything contained herein to the
contrary,  in the  event  that  holders  of shares of  HealthCore  Common  Stock
outstanding  immediately  prior to the  Effective  Time  shall not have voted in
favor of the Merger,  in person or by proxy,  or  consented  thereto in writing,
(such holders, the "Dissenting Shareholders"), then, in such event the shares of
HealthCore Common Stock held by such Dissenting  Shareholders  shall entitle the
holders  thereof  to  receive  payment  of the  fair  value  of such  shares  of
HealthCore  Common Stock in accordance with the provisions of Section 262 of the
DGCL.  Nothing  contained  herein  shall be  construed  to relieve a  Dissenting
Shareholder from compliance with all of the provisions of the DGCL.

                                   ARTICLE V
                         REPRESENTATIONS AND WARRANTIES

         5.1  REPRESENTATIONS  AND WARRANTIES OF ADATOM.  Adatom  represents and
warrants to HealthCore as follows:

         (a) ORGANIZATION AND AUTHORITY. Adatom is a corporation duly organized,
validly existing and in good standing under the laws of the State of California,
has all requisite  corporate  power and authority to own,  lease and operate its
properties  and  carry on its  business  as now  conducted,  is duly  qualified,
authorized  and in good  standing to transact  business in the states  listed in
Section 5.1(a) of the disclosure  schedule  delivered to HealthCore by Adatom on
or prior to the date  hereof  (the  "Adatom  Disclosure  Schedule"),  and is not
required to be  qualified  as a foreign  corporation  in any other  jurisdiction
where failure to qualify would have a Material Adverse Effect on Adatom.

         (b) CAPITALIZATION. As of the date hereof, the authorized capital stock
of Adatom  consists of 10,000,000  shares of Adatom  Common Stock of which,  (A)
2,384,600  shares  are  issued  and  outstanding,  (B) no shares are held in the
treasury of Adatom,  and (C) no shares are reserved for future issuance upon the
exercise of Adatom Options and Adatom Warrants,  which options and warrants have
a term,  exercise price,  vesting schedule and other material terms set forth in
Section 5.1(b) of the Adatom  Disclosure  Schedule.  The  outstanding  shares of
Adatom Common Stock have been duly authorized and are validly issued, fully paid
and nonassessable, and, except as set forth in this Section 5.1(b) or in Section
5.1(b) of the  Adatom  Disclosure  Schedule,  there are no  outstanding  rights,
subscriptions,  warrants,  calls, preemptive rights, options or other agreements
or commitments of any kind or character to purchase or otherwise to acquire from
Adatom any shares of its capital stock or any other security, and no

                                       7

<PAGE>

security or obligation of any kind  convertible  into the capital stock or other
security  of Adatom  exists in favor of any  Person  (as  hereinafter  defined).
Except as set forth in Section 5.1(b) of the Adatom Disclosure Schedule,  Adatom
has no  outstanding  bonds,  debentures,  notes or other  such  obligations  the
holders  of which  have  the  right to vote or  which  are  convertible  into or
exercisable  for securities  having the right to vote with the  shareholders  of
Adatom on any matter.  Other than as  contemplated  by this  Agreement or as set
forth  in  Section  5.1(b)  of the  Adatom  Disclosure  Schedule,  there  are no
outstanding contractual obligations, commitments, understandings or arrangements
of Adatom to  repurchase,  redeem or  otherwise  acquire or make any  payment in
respect of any shares of capital  stock or other equity  securities or ownership
interests of Adatom.

         (c)  ARTICLES  OF   INCORPORATION,   BY-LAWS,   CORPORATE  RECORDS  AND
COMMITTEES.  The  copies  of  the  Articles  of  Incorporation  and  By-Laws  or
equivalent  organizational  documents,  each  as  amended  to  date,  of  Adatom
delivered to HealthCore on or prior to the date hereof are correct and complete.
The stock transfer, minute books and corporate records of Adatom which have been
made available to  HealthCore,  are correct and complete and constitute the only
written records and minutes of the meetings,  proceedings,  and other actions of
the  Board  of  Directors  and the  shareholders  of  Adatom  from  its  date of
incorporation.

         (d)  FINANCIAL  STATEMENTS.  The audited  balance sheet of Adatom as at
December 31, 1998 (the "Adatom Audited Balance  Sheet"),  the unaudited  balance
sheet of Adatom as at March 31, 1999 (the "Adatom Unaudited Balance Sheet", and,
together with the Adatom Audited  Balance Sheet,  the "Adatom  Balance Sheets" )
and,  with respect to the Adatom  Audited  Balance  Sheet,  the related  audited
statements, and, with respect to the Adatom Unaudited Balance Sheet, the related
unaudited statements, of income, capital and cash flows for the three years then
ended (as such documents may have been amended to date) heretofore  delivered to
HealthCore,  have been prepared in accordance with generally accepted accounting
principles  ("GAAP")  applied on a consistent  basis during the periods involved
(except as may be indicated in the notes thereto  subject),  subject to year end
audit  adjustments  for the Adatom  Unaudited  Balance  Sheet,  and are true and
correct in all material respects and fairly present the financial  condition and
the  results  of  operations  and cash flow of Adatom as at the date and for the
periods  covered  thereby.  Section  5.1(d) of the  Adatom  Disclosure  Schedule
contains a description (specifying  obligation,  obligee and amount) of all Debt
(as defined in Section 10.1) of Adatom as of the date hereof.

         (e) AUTHORITY.  The Board of Directors and  shareholders of Adatom have
each unanimously approved this Agreement,  the Merger and the other transactions
contemplated  hereby.  Adatom has all requisite corporate power and authority to
enter  into this  Agreement  and to perform  its  obligations  hereunder  and to
consummate the transactions  contemplated  hereby.  This Agreement has been duly
and validly executed and delivered by Adatom and constitutes a valid and binding
obligation of Adatom enforceable against Adatom in accordance with its terms.

         (f) GOVERNMENTAL  AUTHORIZATIONS AND OTHER CONSENTS. No consent, order,
license,  approval or  authorization  of, or exemption  by, or  registration  or
declaration or filing with, any  Governmental  Entity (as hereinafter  defined),
and no consent or  approval of any other  Person,  is required to be obtained or
made by Adatom in connection with the performance by

                                       8

<PAGE>

Adatom of this Agreement or the consummation of the transactions contemplated to
be performed by it hereunder.

         (g)  NON-CONTRAVENTION.  The performance of this Agreement will not (i)
violate any provision of the Articles of  Incorporation or By-Laws or equivalent
organizational document of Adatom; (ii) violate,  conflict with or result in the
breach or  termination  of, or constitute an amendment to, or otherwise give any
Person the right to terminate, or constitute (or with notice or lapse of time or
both would constitute) a default (by way of substitution, novation or otherwise)
under the terms of, any contract,  mortgage, lease, bond, indenture,  agreement,
franchise or other  instrument  or  obligation  to which Adatom is a party or by
which Adatom or any of its assets or properties  are bound;  (iii) result in the
creation of any lien, mortgage,  claim, charge, security interest,  encumbrance,
restriction or limitation (collectively,  "Liens") upon the properties or assets
of  Adatom  pursuant  to the  terms  of any  contract,  mortgage,  lease,  bond,
indenture,  agreement,  franchise or other  instrument  or  obligation  to which
Adatom is a party or by which  Adatom or any of its  assets  or  properties  are
bound;  (iv) violate any  judgment,  order,  injunction,  decree or award of any
court,  arbitrator,  administrative  agency or Governmental  Entity against,  or
binding upon, Adatom or any of its securities, properties, assets or businesses;
(v) constitute a violation by Adatom of any statute,  law, rule or regulation of
any jurisdiction as such statute,  law, rule or regulation relates to any of its
securities,  properties,  assets or  business;  or (vi)  violate  any Permit (as
herein defined).

         (h)  TANGIBLE  PROPERTY.  Adatom  has good  title to all of the  assets
reflected on its books and records and on the Adatom  Balance  Sheets,  free and
clear of all Liens,  except for those assets leased by Adatom under those leases
listed in  Section  5.1(h) of the Adatom  Disclosure  Schedule.  All  furniture,
fixtures  and  equipment  owned  or used by  Adatom  (collectively,  the  "Fixed
Assets") will be in  substantially  the same  condition at Closing as existed on
the date of this Agreement, reasonable wear and tear excepted.

         (i) REAL PROPERTY AND LEASES.  Section 5.1(i) of the Adatom  Disclosure
Schedule  sets forth a true and correct  list of all leases,  subleases or other
agreements  under which  Adatom is lessee or lessor of any real  property or has
any interest in real property and,  except as set forth in Section 5.1(i) of the
Adatom Disclosure Schedule, there are no rights or options held by Adatom or any
contractual  obligations on its part to purchase or otherwise acquire (including
by way of lease or sublease)  any interest in or use of any real  property,  nor
any rights or options granted by Adatom, or any contractual  obligations entered
into by it,  to sell or  otherwise  dispose  of  (including  by way of  lease or
sublease)  any  interest  in or use of  any  real  property.  All  such  leases,
subleases  and other  agreements  are in full force and  effect  and  constitute
legal, valid and binding  obligations of Adatom and, to the knowledge of Adatom,
the other  parties  thereto,  with no existing  or, to the  knowledge of Adatom,
claimed default or event of default, or event which with notice or lapse of time
or both would  constitute  a default or event of  default,  by Adatom or, to the
knowledge  of Adatom,  by any other party  thereto,  which would have a Material
Adverse  Effect on Adatom.  Adatom is not in violation of any building,  zoning,
health, safety,  environmental or other law, rule or regulation the violation of
which  would have a  Material  Adverse  Effect on Adatom and no notice  from any
Person has been served upon Adatom claiming any such violation.

                                       9
<PAGE>

         (j)  INTELLECTUAL  PROPERTY.  Section  5.1(j) of the Adatom  Disclosure
Schedule  sets  forth all  material  trademarks,  trade  names,  trade  secrets,
patents,  inventions,  processes,  registered copyrights,  or other intellectual
property rights (or applications therefor) used by Adatom in connection with its
business.

         (k) TAX MATTERS. Adatom has timely filed all federal, state, county and
local tax returns,  estimates and reports (collectively,  "Returns") required to
be filed by it through the date hereof,  copies of which have been  delivered to
HealthCore,  which Returns accurately  reflect,  in all material  respects,  the
taxes due for the  periods  indicated,  and Adatom has paid in full all  income,
gross  receipts,   value  added,  excise,  property,   franchise,   sales,  use,
employment,  payroll  and  other  taxes  of any kind  whatsoever  (collectively,
"Taxes") shown to be due by such Returns,  and has established adequate reserves
with respect to any liabilities for Taxes accrued through March 31, 1999,  which
are  reflected  on the  Adatom  Balance  Sheets.  Adatom  does  not  know of any
unassessed  deficiency for Taxes proposed or threatened against Adatom,  and, to
Adatom's  knowledge,  no taxing  authority  has raised any issue with respect to
Adatom which, if adversely  determined,  would result in a liability for any Tax
which has not been reserved against on the Adatom Balance Sheets.  No extensions
with  respect  to the  dates on which  any  Return  was or is due to be filed by
Adatom nor any waivers or agreements by Adatom for the extension of time for the
assessment  or payment of any Taxes are in force.  Adatom has not been,  and, to
Adatom's  knowledge,  currently is not being,  audited by any federal,  state or
local tax authority.

         (l) COMPLIANCE  WITH LAWS.  Adatom is in compliance with all applicable
laws,  rules and  regulations,  the  violation  of which  could  have a Material
Adverse  Effect on its assets,  properties,  liabilities,  business,  results of
operations,  condition  (financial or  otherwise) or prospects,  nor does Adatom
know of the  enactment,  promulgation  or  adoption  of any  such  law,  rule or
regulation which is not yet effective.

         (m) PERMITS AND LICENSES.  Except as set forth in Section 5.1(m) of the
Adatom  Disclosure  Schedule,   Adatom  (including,   without  limitation,   its
employees)  has duly  obtained and holds in full force and effect all  consents,
authorizations,  permits,  licenses,  orders or  approvals  of, and has made all
declarations  and filings with, all  Governmental  Entities that are material in
the conduct of its business (collectively,  the "Permits"); all the Permits were
duly obtained and are in full force and effect; no violations have been recorded
by any  Governmental  Entity in respect of any such Permit and no  proceeding is
pending or, to Adatom's knowledge,  threatened to revoke, deny or limit any such
Permit

         (n) CONTRACTS AND AGREEMENTS.  Section 5.1(n) of the Adatom  Disclosure
Schedule  lists all  material  written or oral  contracts,  agreements,  leases,
mortgages and commitments to which Adatom is a party or by which it may be bound
(individually a "Material Contract",  and collectively,  "Material  Contracts").
All Material Contracts constitute legal, valid and binding obligations of Adatom
and, to the  knowledge of Adatom,  the other  parties  thereto,  and are in full
force and effect on the date hereof, and Adatom has paid in full all amounts due
thereunder  which  are due and  payable  and is not in  default  under  any such
Material  Contract  nor, to the  knowledge of Adatom,  is any other party to any
such Material Contract in default thereunder, nor does any condition exist that,
with notice or lapse of time,  or both,  would  constitute a default or event of
default  thereunder  by Adatom  or, to the  knowledge  of  Adatom,  by

                                       10

<PAGE>

any other Person. Except as set forth in Section 5.1(n) of the Adatom Disclosure
Schedule, no Material Contract requires the consent or approval of a third party
in  connection  with  the  performance  by  Adatom  of  this  Agreement  or  the
transactions contemplated to be performed by it hereunder.

         (o) EMPLOYEE COMPENSATION AND BENEFITS AND RELATIONS.

              (i) Section  5.1(o) of the Adatom  Disclosure  Schedule  lists all
current employees of Adatom,  setting forth their respective  salaries,  whether
they are employed under  contract or at will,  and the  expiration  date of each
contract.

              (ii)  Notwithstanding  anything contained in this Agreement to the
contrary,  Adatom  has  no  liabilities  of any  kind  or  nature  to any of its
employees  in  connection  with their  employment  by Adatom  other than (A) for
compensation payable to such employees arising in the ordinary course,  provided
that (x) all employee  salaries have been paid by Adatom other than that portion
of employee salaries, if any, accruing in the current pay period, and (y) Adatom
has no  existing  severance  obligations  to any of its  employees,  and (B) the
Shareholder   Indebtedness  (as  such  term  is  hereinafter   defined),   which
Shareholder  Indebtedness  shall be  discharged  by Adatom  prior to the Closing
Date.

              (iii)  Except  as set  forth  in  Section  5.1(o)  of  the  Adatom
Disclosure  Schedule,  there are no pension,  retirement,  savings,  disability,
medical,  dental or other health plans, life insurance (including any individual
life insurance  policy as to which Adatom makes premium  payments whether or not
Adatom is the owner,  beneficiary or both of such policy) or other death benefit
plans,  profit  sharing,  deferred  compensation,  stock option,  bonus or other
incentive  plans,  vacation  benefit plans,  severance  plans, or other employee
benefit plans or  arrangements  (whether  written or arising from  custom),  and
Adatom does not have any  employee  pension  benefit  plan as defined in Section
3(2)  of the  Employee  Retirement  Income  Security  Act of  1974,  as  amended
("ERISA"),  or any employee  welfare  benefit plan as defined in Section 3(1) of
ERISA.

              (iv) Adatom  has,  in all  material  respects,  complied  with the
requirements,  to the extent  applicable,  of the  Consolidated  Omnibus  Budget
Reconciliation  Act of  1985  ("COBRA")  with  respect  to the  continuation  of
employer-provided  health  benefits  following a "qualifying  event" which would
otherwise terminate such benefits,  as provided in Section 4980B of the Internal
Revenue  Code of 1986,  as amended,  and  applicable  regulations  and  Internal
Revenue Service rulings, notices and other pronouncements.

              (v) Adatom has not at any time  during the last five years had, or
is there now threatened,  a strike,  picket,  work stoppage,  work slowdown,  or
other  labor  trouble or  dispute,  and Adatom  does not know of any  employee's
proposed resignation whose annual salary exceeds $25,000.

         (p) INSURANCE.  Section 5.1(p) of the Adatom Disclosure  Schedule lists
all policies of property, theft, fire, liability, workers' compensation,  title,
professional  liability or life insurance or other insurance owned or maintained
by Adatom or in which Adatom is a named

                                       11

<PAGE>

insured,  or additional  insured,  or on which Adatom or is paying any premiums.
Except as set forth in Section  5.1(p) of the Adatom  Disclosure  Schedule,  all
such policies are in full force and effect as of the date hereof,  and Adatom is
not in default with  respect to any  provision  contained in any such  insurance
policy nor failed to give any notice or present any claim  thereunder in due and
timely fashion.  Section 5.1(p) of the Adatom  Disclosure  Schedule sets forth a
list of the claims  history for Adatom under such policies since January 1, 1999
and,  except as set forth in Section 5.1(p) of the Adatom  Disclosure  Schedule,
there are no claims outstanding by Adatom under any such policies.

         (q)  LIABILITIES.  There are no material  liabilities or obligations of
Adatom, either accrued, absolute,  contingent or otherwise,  whether or not of a
kind  required by GAAP to be set forth on a financial  statement  (collectively,
"Liabilities"), except (i) those accrued, reflected or otherwise provided for on
the Adatom  Balance  Sheets,  provided  that the  Shareholder  Indebtedness  (as
hereinafter  defined) and any and all  indebtedness to any lending  institutions
reflected thereon  (collectively,  the "Adatom Bank Debt") shall have been fully
paid, performed and discharged prior to the Closing Date, (ii) those incurred in
the ordinary course of Adatom's business since December 31, 1998,  provided that
such  liabilities  have been paid,  performed  and  discharged(or  will be paid,
performed  and  discharged)  by  Adatom  in the  ordinary  course  of  business,
consistent with past practice, (iii) reasonable Transaction Expenses incurred by
Adatom,  (iv) amounts  payable to HealthCore  under the Note,  and (v) the Jesup
Convertible Notes not exceeding, in the aggregate,  Seven Hundred Fifty Thousand
($750,000) Dollars.

         (r) ACTIONS AND  PROCEEDINGS.  Except as provided in Section  5.1(r) of
the  Adatom   Disclosure   Schedule,   there  are  no  claims  actions,   suits,
arbitrations,  proceedings,  investigations  or inquiries,  whether at law or in
equity  and  whether  or  not  before  any  court,  private  body  or  group  or
Governmental  Entity   (collectively,   "Actions"),   pending  or,  to  Adatom's
knowledge, threatened against, or reasonably involving or affecting, to Adatom's
knowledge,  having  performed  no  investigation,  Adatom nor any of its assets,
whether or not fully or partially  covered by insurance or which would give rise
to any right of  indemnification  by any Person from  Adatom,  and there are, to
Adatom's knowledge, no outstanding orders, writs, injunctions, awards, sentences
or decrees of any court,  private body or group or Governmental  Entity against,
reasonably  involving or affecting,  to Adatom's knowledge,  having performed no
investigation, Adatom.

         (s)  ABSENCE OF CHANGES.  Except as set forth in Section  5.1(s) of the
Adatom Disclosure  Schedule,  since December 31, 1998, Adatom has carried on its
business in the ordinary course, and there has not been:

              (i)  any  material  adverse  change  in  its  business   condition
(financial  or  otherwise),  results of operations  or  liabilities,  other than
operating losses sustained by Adatom;

              (ii) any  pending or, to Adatom's  knowledge,  threatened  adverse
amendment,  adverse  modification,  or termination of any agreement,  license or
permit  which is material to its  business,  and which  cannot be replaced by an
agreement,  license or permit containing  substantially all of the same material
terms thereof;

                                       12
<PAGE>

              (iii)  any  disposition  or  acquisition  of any of its  assets or
properties  other  than in the  ordinary  course  which  exceeds  $50,000 in the
aggregate,  other than under the terms of that certain Security Agreement, dated
April 27, 1999, between Adatom and HealthCore;

              (iv) any damage,  destruction  or other  casualty loss (whether or
not  covered by  insurance)  having a  Material  Adverse  Effect,  or that could
reasonably  be expected to have a Material  Adverse  Effect,  on its business or
assets;

              (v) any increase in the compensation of any of its employees; or

              (vi)  except  in  the  ordinary  course,  the  incurrence  of  any
obligation  or  liability  (whether  matured,   unmatured,   absolute,  accrued,
contingent or  otherwise)  which exceeds  $50,000 in the  aggregate,  other than
amounts  owed to (x)  HealthCore  under  the  Note,  and  (y)  under  the  Jesup
Convertible  Notes to be issued under the terms of the Adatom  Engagement Letter
not in excess of Seven Hundred Fifty ($750,000) Dollars, which Jesup Convertible
Notes,  by their terms,  shall be converted  into shares of Adatom  Common Stock
immediately prior to the Closing.

         (t) AFFILIATED  TRANSACTIONS.  For purposes of this Section 5.1(t),  an
"Affiliate" means any Adatom shareholder or any employee, officer or director of
Adatom or any spouse or family member (including in-laws) of, or any corporation
or other  entity  "controlled  by" (as such term is  defined  in Rule 405 of the
General Rules and Regulations  under the Securities Act of 1933, as amended (the
"Securities  Act")),  any such persons or in which any such person has an equity
or ownership interest exceeding five percent.

              (i) Except as specifically set forth (including dollar amounts) in
Section  5.1(v) of the Adatom  Disclosure  Schedule,  as of the date hereof,  no
Affiliate is indebted to, or is a creditor of, Adatom.

              (ii)  During  the past  three  (3)  years,  except as set forth on
Section 5.1(t) of the Adatom  Disclosure  Schedule,  Adatom has not, directly or
indirectly,  purchased,  leased  from or  otherwise  acquired  any  property  or
obtained  any services  from,  or sold,  leased to or otherwise  disposed of any
property or furnished  any services to, or otherwise  dealt with,  any Affiliate
nor is Adatom a party to any contract,  agreement,  license, commitment or other
arrangement,  written or oral,  express or implied,  with an Affiliate except as
disclosed on the Adatom Disclosure Schedule.

         (u) BROKERS OR FINDERS. No agent, broker,  investment banker, financial
advisor  or other  Person  retained  by or on  behalf  of  Adatom  is or will be
entitled to any broker's or finder's fee or any other  commission or similar fee
in  connection  with any of the  transactions  contemplated  by this  Agreement,
except Richardson & Associates and ValueAdd Financial Corporation (collectively,
the "Brokers").  The Surviving  Corporation's maximum aggregate liability to the
Brokers is  limited  to a cash fee equal to the sum of (i) five (5%)  percent of
the cash on-hand of HealthCore as at the Closing Date, (ii) five (5%) percent of
the  principal  amount of the  Note,  and (iii)  five (5%)  percent  of up to an
aggregate maximum of Seven Hundred Fifty Thousand  ($750,000) Dollars in respect
of the Jesup  Convertible  Notes.  The Brokers shall also

                                       13

<PAGE>

receive that number of shares of Adatom Common Stock which shall be  convertible
(in  accordance  with the  provisions of Section  2.1(a)  hereof) into five (5%)
percent  of the  total  outstanding  shares  of  common  stock in the  Surviving
Corporation on the Closing Date,  subject to adjustment  based on any adjustment
to the Per Share Merger  Consideration  in accordance  with the terms of Section
3.2 hereof.

         (v) ENVIRONMENTAL MATTERS. Except as set forth in Section 5.1(v) of the
Adatom  Disclosure  Schedule:  (i)  Adatom  has  obtained  and  is  in  material
compliance  with the terms and  conditions  of all  permits,  licenses and other
authorizations required under applicable federal, state, local and foreign laws,
regulations  and  codes  as  currently  in  effect  relating  to  pollution  and
protection  of  the  environment   ("Environmental   Laws");  (ii)  to  Adatom's
knowledge,   no  asbestos  in  a  friable  condition  or  equipment   containing
polychlorinated  biphenyls or leaking underground or above-ground  storage tanks
is  contained  in or located at any  facility  owned,  leaned or  controlled  by
Adatom; (iii) Adatom is in material compliance with all applicable Environmental
Laws, and has fully  disclosed to HealthCore all known material past and present
non-compliance  with  Environmental  Laws,  and all  known  past  discharges  of
emissions,  leaking  or  releases  known to  Adatom  of any  substance  or waste
regulated  under or  defined by  Environmental  Laws that  could  reasonably  be
expected to form the basis of any claim,  action, suit,  proceeding,  hearing or
investigation  under any applicable  Environmental Laws; and (iv) Adatom has not
received  notice  of any  past or  present  events,  conditions,  circumstances,
activities,  practices,  incidents,  actions or plans that have  resulted  in or
threaten to result in any common law or legal  liability,  or otherwise form the
basis of any claim, action, suit, proceeding, hearing or investigation under any
applicable Environmental Laws; provided,  however, that clauses (i) through (iv)
address  only those  matters  that would have a  Material  Adverse  Effect  with
respect to Adatom.

         (w)  INVESTMENT  COMPANY ACT.  Adatom either (i) is not an  "investment
company," or a company  "controlled" by an "affiliated  company" with respect to
an "investment  company,"  required to register under the Investment Company Act
of 1940,  as  amended  (the  "Investment  Company  Act") or (ii)  satisfies  all
conditions for an exemption from the Investment  Company Act, and,  accordingly,
Adatom is not required to be registered under the Investment Company Act.

         (x) COMPLIANCE WITH SECURITIES LAWS, RULES AND REGULATIONS.  Adatom has
complied  with all  applicable  state and  federal  securities  laws,  rules and
regulations  in  connection  with  the  offer  and  sale  of any  and all of its
securities.

         5.2 REPRESENTATIONS AND WARRANTIES OF HEALTHCORE. HealthCore represents
and warrants to Adatom as follows:

         (a)  ORGANIZATION  AND  AUTHORITY.  HealthCore  is a  corporation  duly
organized,  validly existing and in good standing under the laws of the State of
Delaware,  has all requisite  corporate  power and  authority to own,  lease and
operate  its  properties  and carry on its  business as now  conducted,  is duly
qualified,  authorized  and in good standing to transact  business in the states
listed in  Section  5.2(a) of the  disclosure  schedule  delivered  to Adatom by
HealthCore  on  or  prior  to  the  date  hereof  (the  "HealthCore   Disclosure
Schedule"),  and is not required to be qualified as a foreign corporation in any
other jurisdiction.

                                       14

<PAGE>

         (b) CAPITALIZATION. As of the date hereof, the authorized capital stock
of HealthCore  consists of (i) 19,640,000  shares of HealthCore Common Stock, of
which  3,348,000  shares are  issued and  outstanding,  (ii)  216,000  shares of
HealthCore  Class B Common  Stock,  of  which  216,000  shares  are  issued  and
outstanding,  (iii) no shares are held in the  treasury of  HealthCore,  (iv) no
shares of  HealthCore  Common Stock are reserved for issuance  upon  exercise of
outstanding stock options,  and (v) no shares are reserved for issuance upon the
exercise of  outstanding  warrants.  The shares of HealthCore  Common Stock have
been duly authorized and are validly issued,  fully paid and  nonassessable  and
are not subject to preemptive rights. Except as set forth in this Section 5.2(b)
or in  Section  5.2(b)  of the  HealthCore  Disclosure  Schedule,  there  are no
outstanding rights,  subscriptions,  warrants, calls, preemptive rights, options
or other  agreements  or  commitments  of any kind or  character  to purchase or
otherwise  to acquire  from  HealthCore  any shares of its capital  stock or any
other security,  and no security or obligation of any kind  convertible into the
capital stock or other security of HealthCore  exists in favor of any Person (as
hereinafter  defined).  Except as set forth in Section  5.2(b) of the HealthCore
Disclosure Schedule,  HealthCore has no outstanding bonds, debentures,  notes or
other such  obligations the holders of which have the right to vote or which are
convertible into or exercisable for securities having the right to vote with the
shareholders  of HealthCore on any matter.  Other than as  contemplated  by this
Agreement  or as set  forth  in  Section  5.2(b)  of the  HealthCore  Disclosure
Schedule,  there  are  no  outstanding  contractual  obligations,   commitments,
understandings or arrangements of HealthCore to repurchase,  redeem or otherwise
acquire or make any  payment in respect of any shares of capital  stock or other
equity  securities or ownership  interests of  HealthCore.

         (c)  CERTIFICATE  OF  INCORPORATION,  BY-LAWS,  CORPORATE  RECORDS  AND
COMMITTEES.  The  copies of the  Certificate  of  Incorporation  and  By-Laws or
equivalent  organizational  documents,  each as amended to date,  of  HealthCore
delivered to Adatom on or prior to the date hereof are correct and complete. The
stock transfer, minute books and corporate records of HealthCore which have been
made  available  to Adatom,  are correct and complete  and  constitute  the only
written records and minutes of the meetings,  proceedings,  and other actions of
the Board of  Directors  and the  shareholders  of  HealthCore  from its date of
incorporation  to the  date  hereof.

         (d) SEC  DOCUMENTS.  HealthCore has made available to Adatom a true and
complete copy of each form,  report,  schedule and registration  statement filed
with the SEC by  HealthCore  since  September 30, 1998 (as such  documents  have
since the time of their filing been amended or supplemented, the "HealthCore SEC
Documents")  which are all the documents (other than preliminary  material) that
HealthCore  was  required  to file with the SEC  since  such  date.  As of their
respective dates, the HealthCore SEC Documents (other than preliminary material)
complied in all material respects with the requirements of the Securities Act or
the Exchange Act of 1934 (the "Exchange  Act") as applicable,  and the rules and
regulations of SEC thereunder  applicable to such HealthCore SEC Documents,  and
none of the  HealthCore  SEC  Documents,  as such documents have been amended to
date  (including  all  financial  statements  included  therein and exhibits and
schedules thereto and documents  incorporated by reference  therein),  contained
any  untrue  statement  of a material  fact or omitted to state a material  fact
required to be stated  therein or necessary to make the statements  therein,  in
light  of  the  circumstances  under  which  they  were  made,  not  misleading.
HealthCore  (i) has filed in a timely

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<PAGE>

manner all reports  required to be filed during the twelve (12) calendar  months
immediately preceding the date of the execution of this Agreement,  and (ii) has
not  been  in  default,  in any  material  respect,  in the  payment  of (A) any
installment or  installments  on  indebtedness  for borrowed  money,  or (B) any
rental on one or more long term leases,  which  defaults,  in the aggregate have
had a Material Adverse Effect on the financial condition of HealthCore.

         (e) FINANCIAL STATEMENTS. The audited balance sheet of HealthCore as at
September  30, 1998 (the  "HealthCore  Audited  Balance  Sheet"),  the unaudited
balance  sheet of  HealthCore  as at March 31, 1999 (the  "HealthCore  Unaudited
Balance  Sheet",  and,  together with  HealthCore  Audited  Balance  Sheet,  the
"HealthCore  Balance  Sheets"),  and,  with  respect to the  HealthCore  Audited
Balance  Sheet  the  related  audited  statements,  and,  with  respect  to  the
HealthCore Unaudited Balance Sheet, the related unaudited statements, of income,
capital and cash flows for the three years then  ended,  included in  HealthCore
SEC Documents (as such  documents may have been amended to date) and  heretofore
delivered to Adatom,  comply as to form in all material respects with applicable
accounting  requirements  and with the  rules  and  regulations  of the SEC with
respect  thereto,  have been  prepared  in  accordance  with GAAP  applied  on a
consistent  basis during the periods involved (except as may be indicated in the
notes  thereto  or,  in the  case  of the  unaudited  financial  statements,  as
permitted by Exchange Act Form 10-Q) and are true and correct and fairly present
(subject,  in the  case  of  the  unaudited  financial  statements,  to  normal,
recurring audit  adjustments that,  individually and in the aggregate,  were not
material) the consolidated financial condition and the results of operations and
cash  flows of  HealthCore  as at the  respective  dates and for the  respective
periods covered  thereby and the  consolidated  results of their  operations and
cash flows for the periods then ended. The sum of all cash on hand of HealthCore
as at June 1, 1999 is  estimated  to be  approximately  Two Million Four Hundred
Fifty Thousand ($2,450,000)  Dollars,  after giving effect to the sums loaned by
HealthCore to Adatom pursuant to the Note.

         (f)  AUTHORITY.  The Board of Directors of HealthCore  has  unanimously
approved  this  Agreement,  the Merger and the other  transactions  contemplated
hereby and has recommended that its  shareholders  vote in favor of the adoption
and approval of this Agreement and the Merger (the "HealthCore Recommendation").
The  affirmative  vote of a  majority  of the  votes  that  the  holders  of the
outstanding  shares of HealthCore Common Stock are entitled to cast with respect
to the adoption and approval of this  Agreement  and the Merger is the only vote
of the  holders  of any  class or  series  of the  capital  stock of  HealthCore
necessary  to  approve  this   Agreement,   the  Merger  and  the   transactions
contemplated  hereby, and HealthCore has all other requisite corporate power and
authority to enter into this Agreement and to perform its obligations  hereunder
and to consummate the transactions  contemplated hereby. This Agreement has been
duly and validly  executed and delivered by HealthCore  and  constitutes a valid
and  binding  obligation  of  HealthCore   enforceable   against  HealthCore  in
accordance with its terms, subject to the approval of this Agreement, the Merger
and the transactions contemplated hereby by the shareholders of HealthCore.

         (g)  MERGER  SHARES.  The  HealthCore  Common  Stock  to  be  delivered
hereunder,  when issued in accordance with the terms of this Agreement,  will be
validly issued, fully paid and non-assessable.

                                       16
<PAGE>

         (h) GOVERNMENTAL AUTHORIZATIONS AND OTHER CONSENTS. Except as set forth
in Section  5.2(h) of the HealthCore  Disclosure  Schedule,  no consent,  order,
license,  approval or  authorization  of, or exemption  by, or  registration  or
declaration or filing with, any Governmental  Entity, and no consent or approval
of any other  Person,  is  required  to be  obtained  or made by  HealthCore  in
connection  with  the  performance  by  HealthCore  of  this  Agreement  or  the
consummation of the  transactions  contemplated to be performed by it hereunder.

         (i)  NON-CONTRAVENTION.  Except as set forth in  Section  5.2(i) of the
HealthCore  Disclosure Schedule,  as amended on the Closing Date with respect to
Subsection  (ii)  hereof  in  connection  with the  Merger  or the  transactions
contemplated  thereby,  on the Closing Date,  the  performance of this Agreement
will not (i)  violate any  provision  of the  Certificate  of  Incorporation  or
By-Laws or  equivalent  organizational  document of  HealthCore;  (ii)  violate,
conflict  with or  result in the  breach or  termination  of, or  constitute  an
amendment to, or otherwise give any Person the right to terminate, or constitute
(or with notice or lapse of time or both would  constitute) a default (by way of
substitution, novation or otherwise) under the terms of, any contract, mortgage,
lease, bond, indenture,  agreement,  franchise or other instrument or obligation
to which  HealthCore  is a party or by which  HealthCore or any of its assets or
properties are bound,  all as set forth on Schedule 3.2(a) hereof;  (iii) result
in the  creation  of any Liens  upon the  properties  or  assets  of  HealthCore
pursuant  to the  terms  of any  contract,  mortgage,  lease,  bond,  indenture,
agreement,  franchise or other instrument or obligation to which HealthCore is a
party or by which  HealthCore or any of its assets or properties  are bound (iv)
violate  any  judgment,  order,  injunction,  decree  or  award  of  any  court,
arbitrator,  administrative  agency or Governmental  Entity against,  or binding
upon,  HealthCore or any of its  securities,  properties,  assets or businesses;
(iv)  constitute  a  violation  by  HealthCore  of any  statute,  law,  rule  or
regulation of any jurisdiction as such statute,  law, rule or regulation relates
to any of its  securities,  properties,  assets or business;  or (v) violate any
Permit.

         (j) TANGIBLE  PROPERTY.  HealthCore has good title to all of the assets
reflected  on its books and records and on the  HealthCore  Balance  Sheets that
have not been sold or liquidated as  contemplated  by this  Agreement,  free and
clear of all Liens,  except for those assets  leased by  HealthCore  under those
leases listed in Section 5.2(j) of the HealthCore Disclosure Schedule as amended
on the  Closing  Date in  connection  with  this  Agreement,  the  Merger or the
transactions contemplated hereby or thereby. All Fixed Assets of HealthCore that
have not been sold or liquidated as of the Closing Date as  contemplated by this
Agreement will be in  substantially  the same condition at Closing as existed on
the date of this Agreement, reasonable wear and tear excepted.

         (k)  REAL  PROPERTY  AND  LEASES.  Section  5.2(k)  of  the  HealthCore
Disclosure Schedule sets forth a true and correct list of all leases,  subleases
or other  agreements  under  which  HealthCore  is  lessee or lessor of any real
property  or has any  interest  in real  property  and,  except  as set forth in
Section 5.2(k) of the  HealthCore  Disclosure  Schedule,  there are no rights or
options  held  by  HealthCore  or any  contractual  obligations  on its  part to
purchase  or  otherwise  acquire  (including  by way of lease or  sublease)  any
interest in or use of any real  property,  nor any rights or options  granted by
HealthCore,  or any  contractual  obligations  entered  into  by it,  to sell or
otherwise  dispose of (including by way of lease or sublease) any interest in or
use of any  real  property.  Except  as  set  forth  in  Section  5.2(k)  of the
HealthCore  Disclosure  Schedule,  as

                                       17

<PAGE>

amended on the Closing Date in  connection  with the Merger or the  transactions
contemplated  thereby, all such leases,  subleases and other agreements that are
set forth on Schedule  3.2(a) hereof are in full force and effect and constitute
legal,  valid and binding  obligations  of  HealthCore  and, to the knowledge of
HealthCore,  the other parties thereto, with no existing or, to the knowledge of
HealthCore,  claimed default or event of default,  or event which with notice or
lapse of time or both  would  constitute  a  default  or event  of  default,  by
HealthCore or, to the knowledge of HealthCore, by any other party thereto, which
would  have a  Material  Adverse  Effect  on  HealthCore.  HealthCore  is not in
violation of any building,  zoning, health, safety,  environmental or other law,
rule or regulation  the violation of which would have a Material  Adverse Effect
on  HealthCore  and no notice from any Person has been  served  upon  HealthCore
claiming any such violation.

         (l) TAX MATTERS. HealthCore has timely filed all federal, state, county
and local Returns required to be filed by it through the date hereof,  copies of
which have been delivered to Adatom,  which Returns accurately  reflect,  in all
material respects,  the taxes due for the periods indicated,  and HealthCore has
paid in full all  Taxes  shown to be due by such  Returns,  and has  established
adequate  reserves with respect to any  liabilities  for Taxes  accrued  through
March 31, 1999, which are reflected on the HealthCore Balance Sheets. HealthCore
does not know of any  unassessed  deficiency  for Taxes  proposed or  threatened
against  HealthCore,  and, to HealthCore's  knowledge,  no taxing  authority has
raised any issue with respect to  HealthCore  which,  if  adversely  determined,
would result in a liability for any Tax which has not been  reserved  against on
the HealthCore  Balance Sheets. No extensions with respect to the dates on which
any Return was or is due to be filed by HealthCore nor any waivers or agreements
by  HealthCore  for the  extension of time for the  assessment or payment of any
Taxes are in force.  HealthCore has not been,  and, to  HealthCore's  knowledge,
currently is not being, audited by any federal, state or local tax authority.

         (m)  COMPLIANCE  WITH  LAWS.  HealthCore  is  in  compliance  with  all
applicable  laws,  rules and  regulations,  the  violation of which could have a
Material  Adverse  Effect  on its  assets,  properties,  liabilities,  condition
(financial  or  otherwise)  or  prospects,  nor  does  HealthCore  know  of  the
enactment, promulgation or adoption of any such law, rule or regulation which is
not yet effective.

         (n) PERMITS AND LICENSES.  Except as set forth in Section 5.2(n) of the
HealthCore Disclosure Schedule,  HealthCore (including,  without limitation, its
employees)  duly  obtained all Permits that were  material in the conduct of its
business,  and no violations  have been recorded by any  Governmental  Entity in
respect of any such Permit.

         (o)  CONTRACTS  AND  AGREEMENTS.   Section  5.2(o)  of  the  HealthCore
Disclosure  Schedule  lists all written  and oral  Material  Contracts  to which
HealthCore  is a party or by  which  it may be  bound.  Except  as set  forth in
Section 5.2(o) of the HealthCore  Disclosure Schedule, as amended on the Closing
Date,  all Material  Contracts set forth on Schedule  3.2(a)  hereof  constitute
legal,  valid and binding  obligations  of  HealthCore  and, to the knowledge of
HealthCore,  of the other parties  thereto,  and are in full force and effect on
the date  hereof,  and  HealthCore  has paid in full all amounts due  thereunder
which are due and payable and is not in default under any such Material Contract
nor, to the  knowledge of  HealthCore,  is any other party

                                       18

<PAGE>

to any such  Material  Contract in default  thereunder,  nor does any  condition
exist that, with notice or lapse of time, or both, would constitute a default or
event of default thereunder by HealthCore or, to the knowledge of HealthCore, by
any  other  Person.  Except  as set forth in  Section  5.2(o) of the  HealthCore
Disclosure  Schedule,  as amended on the Closing Date, no Material  Contract set
forth on Schedule 3.2(a) of this Agreement requires the consent or approval of a
third party in connection  with the  performance by HealthCore of this Agreement
or the transactions contemplated to be performed by it hereunder.

         (p) EMPLOYEE COMPENSATION AND BENEFITS AND RELATIONS.

              (i) Section 5.2(p) of the HealthCore Disclosure Schedule lists all
current  employees  of  HealthCore,  setting  forth their  respective  salaries,
whether they are employed under contract or at will, and the expiration  date of
each contract.

              (ii)  Notwithstanding  anything contained in this Agreement to the
contrary,  HealthCore  has no  liabilities  of any kind or  nature to any of its
employees in connection with their  employment by HealthCore  other than (A) for
compensation  payable to such  employees  accruing in the current pay period and
arising in the  ordinary  course,  and (B)  severance  arrangements  or contract
settlements   entered  into  by  HealthCore  in  connection  with  the  sale  or
liquidation  of  the  HealthCore   Business  (as  hereinafter   defined)  or  as
contemplated by this Agreement.

              (iii)  Except as set  forth in  Section  5.2(p) of the  HealthCore
Disclosure Schedule,  as of the Closing Date all pension,  retirement,  savings,
disability, medical, dental or other health plans, life insurance (including any
individual life insurance  policy as to which  HealthCore makes premium payments
whether or not  HealthCore is the owner,  beneficiary or both of such policy) or
other death benefit plans, profit sharing, deferred compensation,  stock option,
bonus or other incentive  plans,  vacation  benefit plans,  severance  plans, or
other employee  benefit plans or arrangements  (whether  written or arising from
custom)  maintained  by  HealthCore  shall  have  been  terminated.  Other  than
HealthCore's 401(k) plan,  HealthCore does not have any employee pension benefit
plan as defined in Section 3(2) of ERISA,  or any employee  welfare benefit plan
as defined in Section 3(1) of ERISA.

              (iv) HealthCore has, in all material  respects,  complied with the
requirements,   to  the  extent  applicable,   of  COBRA  with  respect  to  the
continuation of employer-provided health benefits following a "qualifying event"
which would otherwise  terminate such benefits,  as provided in Section 4980B of
the Internal  Revenue Code of 1986, as amended,  and applicable  regulations and
Internal Revenue Service rulings, notices and other pronouncements.

              (v) HealthCore has not at any time during the last five years had,
or is there now threatened,  a strike, picket, work stoppage,  work slowdown, or
other labor trouble or dispute,  and HealthCore  does not know of any employee's
proposed  resignation  whose  annual  salary  exceeds  $25,000,  other  than  as
contemplated by this Agreement. HealthCore has not been, and is currently not, a
party to any collective bargaining agreements.

                                       19
<PAGE>

         (q) INSURANCE.  Section 5.2(q) of the  HealthCore  Disclosure  Schedule
lists all policies of property,  theft, fire, liability,  workers' compensation,
title,  professional  liability or life  insurance or other  insurance  owned or
maintained  by  HealthCore  or  in  which  HealthCore  is a  named  insured,  or
additional insured, or on which HealthCore or is paying any premiums.  Except as
set forth in Section  5.2(q) of the  HealthCore  Disclosure  Schedule,  all such
policies are in full force and effect as of the date hereof,  and  HealthCore is
not in default with  respect to any  provision  contained in any such  insurance
policy nor failed to give any notice or present any claim  thereunder in due and
timely fashion.  Section 5.2(q) of the HealthCore Disclosure Schedule sets forth
a summary of the claims history for HealthCore under such policies since January
1, 1999 and, except as set forth in Section 5.2(q) of the HealthCore  Disclosure
Schedule, there are no claims outstanding by HealthCore under any such policies.

         (r)  LIABILITIES.  There are no  material  Liabilities  of  HealthCore,
except (a) those accrued,  reflected or otherwise provided for on the HealthCore
Balance  Sheets,  (b) those  incurred  in the  ordinary  course of  HealthCore's
business  since December 31, 1998,  consistent  with past  practices,  no one of
which  exceeds  $25,000,   (c)  reasonable   Transaction  Expenses  incurred  by
HealthCore,  and (d) those listed in Section 5.2(r) of the HealthCore Disclosure
Schedule.

         (s) ACTIONS AND  PROCEEDINGS.  Except as provided in Section  5.2(s) of
the  HealthCore  Disclosure  Schedule,  there  are no  Actions,  pending  or, to
HealthCore's   knowledge,   threatened  against,  or  reasonably   involving  or
affecting,  to  HealthCore's  knowledge,   having  performed  no  investigation,
HealthCore nor any of its assets,  whether or not fully or partially  covered by
insurance or which would give rise to any right of indemnification by any Person
from  HealthCore,  and there are,  to  HealthCore's  knowledge,  no  outstanding
orders, writs,  injunctions,  awards, sentences or decrees of any court, private
body or group or Governmental Entity against, reasonably involving or affecting,
to HealthCore's knowledge, having performed no investigation, HealthCore.

         (t)  ABSENCE OF CHANGES.  Except as set forth in Section  5.2(t) of the
HealthCore Disclosure Schedule, or in connection with the sale or liquidation of
the HealthCore Business,  since December 31, 1998, HealthCore has carried on its
business in the ordinary course, and there has not been:

              (i) except in the ordinary course, or as contemplated or permitted
by this  Agreement,  the  incurrence  of any  obligation  or liability  (whether
matured,  unmatured,  absolute,  accrued, contingent or otherwise) which exceeds
$50,000 in the aggregate, other than: (A) under the terms of that certain letter
amendment,  dated April 26, 1999,  between Polan and  HealthCore,  (B) under the
terms  of  the  HealthCore   Engagement   Letter,  and  (C)  to  David  Mullikin
("Mullikin"),  HealthCore's  President,  in  severance  of his  employment  with
HealthCore  consisting  of (x)  cash  in the  amount  of  One  Hundred  Thousand
($100,000)  Dollars,  and (y) options to  purchase  up to one  hundred  thousand
(100,000)  shares of  HealthCore  Common Stock at an exercise  price of $.10 per
share.

         (u) AFFILIATED  TRANSACTIONS.  For purposes of this Section 5.1(u),  an
"Affiliate"  means  any  HealthCore  shareholder  or any  employee,  officer  or
director of HealthCore or any

                                       20

<PAGE>

spouse or family  member  (including  in-laws) of, or any  corporation  or other
entity "controlled by" (as such term is defined in Rule 405 of the General Rules
and Regulations under the Securities Act), any such persons or in which any such
person has an equity or ownership interest exceeding five percent.

              (i) Except as specifically set forth (including dollar amounts) in
Section  5.2(u)  of the  HealthCore  Disclosure  Schedule  or  disclosed  in the
HealthCore SEC Documents, as of the date hereof, no Affiliate is indebted to, or
is a creditor of, HealthCore.

              (ii)  Except as set  forth on  Section  5.2(u)  of the  HealthCore
Disclosure  Schedule or disclosed in the HealthCore  SEC  Documents,  during the
past three (3) years,  HealthCore has not,  directly or  indirectly,  purchased,
leased from or otherwise acquired any property or obtained any services from, or
sold, leased to or otherwise  disposed of any property or furnished any services
to, or otherwise  dealt with,  any  Affiliate  nor is  HealthCore a party to any
contract, agreement, license, commitment or other arrangement,  written or oral,
express or implied,  with an Affiliate  except as  disclosed  on the  HealthCore
Disclosure Schedule.

         (v) BROKERS OR FINDERS. No agent, broker,  investment banker, financial
advisor or other  Person  retained by or on behalf of  HealthCore  is or will be
entitled to any broker's or finder's fee or any other  commission or similar fee
in connection with any of the transactions contemplated by this Agreement.

         (w) ENVIRONMENTAL MATTERS. Except as set forth in Section 5.2(w) of the
HealthCore  Disclosure Schedule:  (i) HealthCore has obtained and is in material
compliance  with the terms and  conditions  of all  permits,  licenses and other
authorizations   required  under   applicable   Environmental   Laws;   (ii)  to
HealthCore's  knowledge,  no  asbestos  in  a  friable  condition  or  equipment
containing  polychlorinated  biphenyls or leaking  underground  or  above-ground
storage  tanks is  contained  in or located  at any  facility  owned,  leaned or
controlled by HealthCore;  (iii)  HealthCore is in material  compliance with all
applicable  Environmental  Laws,  and has fully  disclosed  to Adatom  all known
material past and present  non-compliance with Environmental Laws, and all known
past  discharges  of emissions,  leaking or releases  known to HealthCore of any
substance or waste regulated under or defined by  Environmental  Laws that could
reasonably be expected to form the basis of any claim, action, suit, proceeding,
hearing or  investigation  under any  applicable  Environmental  Laws;  and (iv)
HealthCore has not received  notice of any past or present  events,  conditions,
circumstances,  activities,  practices,  incidents,  actions  or plans that have
resulted  in or  threaten  to result in any  common law or legal  liability,  or
otherwise  form the basis of any claim,  action,  suit,  proceeding,  hearing or
investigation under any applicable  Environmental Laws; provided,  however, that
clauses (i) through (iv)  address only those  matters that would have a Material
Adverse Effect with respect to HealthCore.

         (x) INVESTMENT COMPANY ACT. HealthCore either (i) is not an "investment
company," or a company  "controlled" by an "affiliated  company" with respect to
an "investment  company,"  required to register under the Investment Company Act
of 1940,  as  amended  (the  "Investment  Company  Act") or (ii)  satisfies  all
conditions for an exemption from the Investment  Company Act, and,  accordingly,
HealthCore is not required to be registered under the Investment Company Act.

                                       21
<PAGE>

         (y) COMPLIANCE WITH SECURITIES LAWS, RULES AND REGULATIONS.  HealthCore
has complied with all applicable  state and federal  securities  laws, rules and
regulations  in  connection  with  the  offer  and  sale  of any  and all of its
securities.

                                   ARTICLE VI
                                    COVENANTS

         6.1  COVENANTS  OF ADATOM.  Adatom  hereby  covenants  and agrees that,
except as expressly  contemplated or permitted by this Agreement,  from the date
hereof  through  earlier  of the  Closing  Date  or  the  Termination  Date  (as
hereinafter defined) it shall comply with the following covenants:

         (a) ORDINARY COURSE. Adatom shall carry on its businesses in the usual,
regular and  ordinary  course in  substantially  the same  manner as  heretofore
conducted and use its  commercially  reasonable,  good faith efforts to preserve
intact its current  business  organizations,  keep available the services of its
current  officers and  employees  and preserve its  relationships  with material
customers, suppliers, contractors, distributors, licensors, licensees and others
having  business  dealings  with it to the end that  its  goodwill  and  ongoing
business  shall not be impaired  in any  material  respect at the Closing  Date.
Without limiting the generality of the foregoing,  and except as contemplated by
this Agreement, or as otherwise required by law, Adatom shall not:

              (i) (A) declare,  set aside or pay any  dividends  on, or make any
other distributions in respect of, any of its capital stock, (B) split,  combine
or reclassify any of its capital stock or issue or authorize the issuance of any
other  securities in respect of, in lieu of or in substitution for shares of its
capital  stock,  or (C)  purchase,  redeem or  otherwise  acquire  any shares of
capital stock of Adatom or any other securities thereof or any rights,  warrants
or options to acquire any such shares or other securities;

              (ii) except as  contemplated  by this Agreement or the Transaction
Documents,  authorize for issuance,  issue,  deliver, sell or agree or commit to
issue,  sell or deliver  (whether  through the  issuance or granting of options,
warrants, commitments,  subscriptions,  rights to purchase or otherwise), pledge
or  otherwise  encumber  any  shares of its  capital  stock,  any  other  voting
securities  or any  securities  convertible  into,  or any  rights,  warrants or
options to acquire, any such shares, voting securities or convertible securities
or any other  securities or equity  equivalents  (including  without  limitation
stock  appreciation  rights) other than (A) issuances  upon exercise of employee
and director stock options issued pursuant to employee and non-employee director
stock option plans  outstanding  on the date hereof and listed in Section 5.1(b)
of the Adatom Disclosure Schedule; (B) the securities  contemplated to be issued
by Adatom  pursuant  the terms of that  certain  engagement  letter (the "Adatom
Engagement Letter"),  dated April 27, 1999, between Adatom and Jesup & Lamont, a
copy of which is attached hereto as Exhibit B, (C) to Richard Barton ("Barton"),
the President of Adatom, or an IRA of Barton, securities of Adatom in connection
with the discharge of Adatom's existing indebtedness to Barton (the "Shareholder
Indebtedness"), (D) to the Brokers pursuant to contracts between the Brokers and
Adatom, and (E) to Polan under the terms of the Letter Agreement (as hereinafter
defined);

                                       22
<PAGE>

              (iii) except with  respect to bonuses made in the ordinary  course
of business  consistent  with past practice,  and except as contemplated by this
Agreement,  adopt or amend in any material  respect any bonus,  profit  sharing,
compensation,  severance,  termination,  stock option, stock appreciation right,
pension, retirement, employment or other employee benefit agreement, trust, plan
or other  arrangement  for the  benefit or welfare of any  director,  officer or
employee of Adatom or increase in any manner the compensation or fringe benefits
of any  director,  officer or employee of Adatom or pay any benefit not required
by any  existing  agreement  or place any assets in any trust for the benefit of
any director,  officer or employee of Adatom (in each case,  except with respect
to employees in the ordinary course of business consistent with past practice);

              (iv) amend its Articles of  Incorporation,  By-laws or  equivalent
organizational documents or alter through merger,  liquidation,  reorganization,
restructuring or in any other fashion the corporate structure of Adatom;

              (v) sell, lease,  license,  mortgage or otherwise encumber (except
to secure the incurrence of Debt permitted  hereunder) or subject to any Lien or
otherwise dispose of any of its material properties or assets;

              (vi)  acquire or agree to acquire (x) by merging or  consolidating
with, or by  purchasing a  substantial  portion of the stock or assets of, or by
any other manner, any business or any corporation,  partnership,  joint venture,
association or other business organization or division thereof or (y) any assets
that are material, individually or in the aggregate, to Adatom taken as a whole;

              (vii)  incur any Debt in excess of Seven  Hundred  Fifty  Thousand
($750,000)  Dollars  (inclusive of Debt  incurred in  connection  with the Jesup
Convertible  Notes),  exclusive  of the sums  loaned  to  Adatom  by  HealthCore
pursuant to the terms of the Note, issue or sell any debt securities or warrants
or other  rights  to  acquire  any  debt  securities  of  Adatom  other  than as
contemplated in the Adatom  Engagement  Letter,  or permitted in accordance with
the terms of this  Agreement,  guarantee any debt  securities of another person,
enter  into any  "keep  well" or  other  agreement  to  maintain  any  financial
condition of another  Person or enter into any  arrangement  having the economic
effect  of any of  the  foregoing,  or  make  any  loans,  advances  or  capital
contributions to, or investments in, any other Person, other than to Adatom;

              (viii) change any accounting principle used by it, unless required
by the Financial Accounting Standards Board; and

              (ix) except as set forth in Section 6.1(b)(ii) hereof,  enter into
any  transaction  or series of  transactions  with any Affiliate of Adatom other
than on terms and  conditions  substantially  as favorable to Adatom as would be
obtainable by Adatom at the time of such  transaction  with a Person that is not
an Affiliate of Adatom.

                                       23
<PAGE>

         (b)  SHAREHOLDER  INDEBTEDNESS.  Adatom shall discharge all of Adatom's
monetary  obligations  to  Adatom's  shareholders,   employees  and  the  Adatom
Affiliates, including, without limitation, the Shareholder Indebtedness.

         (c) POLAN EMPLOYMENT AGREEMENT;  ISSUANCE OF ADATOM SHARES. Immediately
prior to the Closing,  Adatom  shall enter into the  employment  agreement  with
Polan heretofore  executed by Polan,  only, in accordance with the terms of that
certain letter agreement (the "Letter Agreement"),  dated as of the date hereof,
between  Adatom and Polan a copy of which is  attached  hereto as Exhibit C (the
"Polan Employment Agreement"),  and shall, as contemplated by, and in accordance
with the terms of, the Letter Agreement, issue to Polan immediately prior to the
Closing  such number of shares of Adatom  Common Stock which in the Merger shall
be convertible (in accordance with the provisions of Section 2.1(a) hereof) into
three hundred fifty thousand  (350,000)  shares of the  HealthCore  Common Stock
(such shares being the "Polan Adatom Shares").

         (d) NO SOLICITATION.  Adatom shall not authorize or permit any of their
respective  Agents to, (i) solicit,  initiate,  encourage  (including  by way of
furnishing  information) or take any other action to facilitate,  any inquiry or
the making of any proposal which  constitutes,  or may reasonably be expected to
lead to, any  acquisition  or purchase of a substantial  amount of assets of, or
any equity  interest in, or any tender offer  (including a self tender offer) or
exchange  offer,   merger,   consolidation,   business   combination,   sale  of
substantially  all assets,  sale of securities,  recapitalization,  liquidation,
dissolution or similar transaction involving Adatom (other than the transactions
contemplated by this Agreement) or any other material corporate transaction, the
consummation of which would or could reasonably be expected to impede, interfere
with, prevent or materially delay the Merger (each a "Transaction Proposal," and
collectively,   the  "Transaction   Proposals")  or  agree  to  or  endorse  any
Transaction  Proposal  or  (ii)  propose,  enter  into  or  participate  in  any
discussions or  negotiations  regarding any of the foregoing,  or furnish to any
other Person any information with respect to its business,  properties or assets
or any of the  foregoing,  or otherwise  cooperate in any way with, or assist or
participate  in,  facilitate  or  encourage,  any effort or attempt by any other
Person to do or seek any of the foregoing.

         6.2 COVENANTS OF  HEALTHCORE.  HealthCore  hereby  covenants and agrees
that, except as expressly contemplated or permitted by this Agreement,  from the
date hereof through earlier of the Closing Date or the Termination Date it shall
comply with the following covenants:

         (a)  CLOSING  CASH  AMOUNT.   HealthCore  shall  use  its  commercially
reasonable, good faith efforts to secure a minimum of Three Million ($3,000,000)
Dollars in cash,  calculated  based upon the same  formula  set forth in Section
3.2(a) hereof;

         (b) SALE OR LIQUIDATION OF THE HEALTHCORE  BUSINESS.  HealthCore  shall
endeavor to consummate the sale or liquidation, in HealthCore's sole discretion,
of  HealthCore's  existing  health discount card business and any other business
being  conducted by  HealthCore  (the  "HealthCore  Business"),  the  agreements
relating  to such sale or  liquidation  to be in form and  substance  reasonably
acceptable to Adatom, and shall, in connection  therewith,  (i) terminate all of
HealthCore's  existing  employment  relationships  with  all of  its  employees,
including, but not

                                       24

<PAGE>

limited to, its key executives,  Polan and Mullikin, and (ii) terminate,  cancel
or assign all material  contractual  commitments and other material  obligations
arising in  connection  with the  HealthCore  Business  (including  HealthCore's
office lease).  In addition,  HealthCore shall take all commercially  reasonable
steps necessary to achieve the maximum  valuation of the HealthCore  Business in
any such sale or liquidation thereof;

         (c) STOCK OPTION PLAN.  HealthCore shall adopt a Stock Option Plan (the
"Stock  Option Plan") in form and substance  reasonably  satisfactory  to Adatom
covering  an  amount of shares of  HealthCore  Common  Stock  equal to ten (10%)
percent of the Surviving Corporation's issued and outstanding capital stock on a
fully-diluted basis immediately  following the Closing,  for issuance of options
to employees, contractors and directors of the Surviving Corporation.

         (d) ORDINARY  COURSE.  Except as  contemplated  by this  Agreement,  or
otherwise required by law, HealthCore shall not:

              (i) (A) declare,  set aside or pay any  dividends  on, or make any
other distributions in respect of, any of its capital stock, (B) split,  combine
or reclassify any of its capital stock or issue or authorize the issuance of any
other  securities in respect of, in lieu of or in substitution for shares of its
capital stock or (C) purchase, redeem or otherwise acquire any shares of capital
stock of HealthCore or any other securities  thereof or any rights,  warrants or
options to acquire any such shares or other securities;

              (ii)  except as  contemplated  by this  Agreement,  authorize  for
issuance,  issue,  deliver,  sell or agree or commit to issue,  sell or  deliver
(whether  through the  issuance or granting of options,  warrants,  commitments,
subscriptions,  rights to purchase or otherwise),  pledge or otherwise  encumber
any shares of its capital stock,  any other voting  securities or any securities
convertible  into,  or any  rights,  warrants  or options to  acquire,  any such
shares,  voting securities or convertible  securities or any other securities or
equity equivalents  (including  without  limitation stock  appreciation  rights)
other than (A) issuances  upon  exercise of employee and director  stock options
issued  pursuant  to employee  and  non-employee  director  stock  option  plans
outstanding  on the date hereof and listed in Section  5.2(b) of the  HealthCore
Disclosure Schedule, (B) the securities  contemplated to be issued by HealthCore
pursuant  the terms of the  HealthCore  Engagement  Letter,  and (C)  options or
warrants issued in  consideration  for the settlement of certain  obligations of
HealthCore  to its  employees  and third party  creditors of HealthCore up to an
aggregate maximum of Thirty Thousand (30,000) shares;

              (iii) except with respect to annual  bonuses  accrued or reflected
on the HealthCore  Unaudited  Balance Sheet,  and except as contemplated by this
Agreement,  adopt or amend in any material  respect any bonus,  profit  sharing,
compensation,  severance,  termination,  stock option, stock appreciation right,
pension, retirement, employment or other employee benefit agreement, trust, plan
or other  arrangement  for the  benefit or welfare of any  director,  officer or
employee of  HealthCore  or increase  in any manner the  compensation  or fringe
benefits of any  director,  officer or employee of HealthCore or pay any benefit
not required by any existing  agreement or place any assets in any trust for the
benefit of any  director,  officer or  employee  of  HealthCore,  other than (A)
options  or  warrants  issued in  consideration  for the

                                       25

<PAGE>

settlement of certain obligations of HealthCore to its employees and third party
creditors of HealthCore up to an aggregate  maximum of Thirty Thousand  (30,000)
shares,  and (B)  severance  packages  not in excess of an  aggregate  of Eighty
Thousand ($80,000) Dollars other than to Polan and Mullikin;

              (iv) amend its Certificate of Incorporation, By-laws or equivalent
organizational documents or alter through merger,  liquidation,  reorganization,
restructuring or in any other fashion the corporate structure of HealthCore;

              (v) sell,  lease,  license,  mortgage  or  otherwise  encumber  or
subject to any Lien or otherwise  dispose of any of its material  properties  or
assets;

              (vi)  acquire or agree to acquire (x) by merging or  consolidating
with, or by  purchasing a  substantial  portion of the stock or assets of, or by
any other manner, any business or any corporation,  partnership,  joint venture,
association or other business organization or division thereof or (y) any assets
that are material,  individually or in the aggregate,  to HealthCore  taken as a
whole;

              (vii)  incur  any  Debt,  issue  or sell any  debt  securities  or
warrants or other rights to acquire any debt securities of HealthCore, guarantee
any debt  securities  of another  person,  enter  into any "keep  well" or other
agreement to maintain any  financial  condition of another  Person or enter into
any arrangement having the economic effect of any of the foregoing,  or make any
loans,  advances  or  capital  contributions  to, or  investments  in, any other
Person, other than to HealthCore;

              (viii) change any accounting principle used by it, unless required
by the SEC or the Financial Accounting Standards Board; and

              (ix) enter into any transaction or series of transactions with any
Affiliate  of  HealthCore  or  otherwise  that would be required to be disclosed
pursuant  to Item 404 of  Regulation  S-K  other  than on terms  and  conditions
substantially as favorable to HealthCore as would be obtainable by HealthCore at
the  time  of  such  transaction  with a  Person  that  is not an  Affiliate  of
HealthCore.

         (e) NO  SOLICITATION.  HealthCore  shall not authorize or permit any of
its Agents to, (i) solicit, initiate,  encourage (including by way of furnishing
information)  or take any other action to facilitate,  any inquiry or the making
of any Transaction Proposal, or agree to or endorse any Transaction Proposal, or
(ii) propose,  enter into or  participate  in any  discussions  or  negotiations
regarding any of the foregoing,  or furnish to any other Person any  information
with respect to its business,  properties or assets or any of the foregoing,  or
otherwise  cooperate in any way with, or assist or participate in, facilitate or
encourage,  any effort or  attempt by any other  Person to do or seek any of the
foregoing;  provided, however, that the foregoing clauses (i) and (ii) shall not
prohibit HealthCore from (A) furnishing  information  pursuant to an appropriate
confidentiality  letter concerning HealthCore and its businesses,  properties or
assets  to a  third  party  who the  Board  of  Directors  of  HealthCore  has a
reasonable  basis for  determining  is likely  to make a  Qualified  Transaction
Proposal,  (B) engaging in discussions or  negotiations  with such

                                       26

<PAGE>

a third party who has made a Qualified  Transaction  Proposal,  or (C) following
receipt  of a  Qualified  Transaction  Proposal,  taking and  disclosing  to its
shareholders a position  contemplated by Rule 14e-2(a) under the Exchange Act or
changing  the  HealthCore  Recommendation,  but in each case  referred to in the
foregoing  clauses  (A)  through  (C)  only  after  the  Board of  Directors  of
HealthCore  concludes  in good  faith  following  receipt  of a written  opinion
addressed to HealthCore  from outside  counsel to HealthCore that such action is
reasonably necessary for the Board of Directors of HealthCore to comply with its
fiduciary  obligations to  shareholders  under  applicable  law. If the Board of
Directors of HealthCore receives a Transaction  Proposal,  then HealthCore shall
immediately  inform Adatom of the terms and  conditions of such proposal and the
identity  of the Person  making it and shall keep Adatom  fully  informed of the
status  and  details  of any such  Transaction  Proposal  and of all steps it is
taking in response to such Transaction Proposal. For purposes of this Agreement,
the term "Qualified Transaction Proposal" shall mean a Transaction Proposal that
the  Board  of  Directors  of  HealthCore   determines  in  good  faith,   after
consultation with its outside financial advisor,  is reasonably capable of being
consummated,  is not subject to any material contingencies relating to financing
and will result in a transaction  materially more favorable to the  shareholders
of HealthCore,  from a financial point of view, than the Merger.

         (f)  HEALTHCORE  RECOMMENDATION.  The Board of Directors of  HealthCore
shall not  withdraw  or  modify or  propose  to  withdraw  or modify in a manner
adverse to Adatom, the HealthCore Recommendation,  unless the Board of Directors
of HealthCore  concludes in good faith  following  receipt of a written  opinion
addressed to it from outside counsel to HealthCore that such action is necessary
for  the  Board  of  Directors  of  HealthCore  to  comply  with  its  fiduciary
obligations to shareholders under applicable law.  HealthCore shall use its best
efforts to solicit  from its  shareholders  proxies in favor of the approval and
adoption of this  Agreement and the  transactions  contemplated  hereby,  and to
secure  the vote or the  consent  of the  shareholders  required  by the DGCL to
approve and adopt this Agreement and the transactions contemplated hereby.

         6.3 MUTUAL COVENANTS OF ADATOM AND HEALTHCORE.

         (a) PRE-CLOSING  COVENANTS.  Adatom and HealthCore each hereby covenant
and agree that, except as expressly contemplated or permitted by this Agreement,
from the date  hereof  through  earlier of the Closing  Date or the  Termination
Date, it shall comply with the following:

              (i)  CONFIDENTIALITY.  Each  party  shall,  and shall use its best
efforts  to  cause  its  Affiliates  and its and  their  respective  Agents  (as
hereinafter defined) to keep secret and hold in strictest confidence any and all
documents  and  information  relating  to the  other  party  and its  respective
Affiliates  furnished  to such  first  party  (whether  before or after the date
hereof) in connection with the transactions  contemplated hereunder,  other than
the following: (A) information that has become generally available to the public
other than as a result of a disclosure  by such first party,  its  Affiliates or
its Agents;  (B)  information  that becomes  available to such first party or an
Agent of such  party on a  nonconfidential  basis from a third  party  having no
obligation  of  confidentiality  to a party to this  Agreement and which has not
itself  received such  information  directly or indirectly in breach of any such
obligation of confidentiality; (C)

                                       27

<PAGE>

information  that such first party is required  to disclose by  applicable  law,
judicial  order or  pursuant  to any  listing  agreement  with,  or the rules or
regulations of, any securities  exchange or automated  quotation system on which
securities of such party or any such  Affiliate  are listed or traded;  provided
that the first  party shall  notify the other  party as promptly as  practicable
(and, if possible, prior to making such disclosure) and shall use its reasonable
best  efforts  to limit  the  scope  of such  disclosure  and seek  confidential
treatment of the information to be disclosed;  and (D) disclosures  made by such
first party as shall be reasonably  necessary in connection  with  obtaining the
HealthCore  Required Consents or the Adatom Required  Consents,  as the case may
be.

              (ii) PUBLICITY.  Except as otherwise required by applicable law or
the rules or  regulations  of any  securities  exchange or  automated  quotation
system on which the  securities of such party or any Affiliate of such party are
listed or traded,  until the  earlier  of (A) the date on which  this  Agreement
ceases to be in effect or (B) the  Closing  Date,  no party shall issue or cause
the publication of any press release or other public  announcement  with respect
to the  transactions  contemplated by this Agreement  without the consent of the
other party and in any event each party agrees that it will give the other party
reasonable   opportunity  to  review  and  comment  upon  any  such  release  or
announcement prior to publication of the same.

              (iii) ACCESS TO INFORMATION.  Upon reasonable  notice,  each party
shall afford to the other party and its Agents,  access,  during normal business
hours during the period prior to the Closing Date, to all its properties, books,
Contracts,  commitments  and records and,  during such period,  each party shall
promptly  furnish or otherwise  make  available to the other party (A) a copy of
each  report,  schedule,  registration  statement  and other  document  filed or
received  by any of them during such  period  pursuant  to the  requirements  of
Federal  and  applicable  state  securities  laws and (B) all other  information
concerning  its  business,  properties  and  personnel  as the  other  party may
reasonably request.

              (iv)  SATISFACTION  OF  CONDITIONS.   Subject  to  the  terms  and
conditions of this  Agreement,  each party hereto  agrees to use its  reasonable
best  efforts,  subject  to their  respective  fiduciary  duties,  to cause  the
conditions  set forth in Article VII of this  Agreement to be satisfied,  and to
take,  or cause to be taken,  all  action  and to do,  or cause to be done,  all
things  necessary,  proper or advisable under applicable laws and regulations to
consummate  and make  effective  as promptly  as  practicable  the  transactions
contemplated  by this  Agreement,  including  cooperating  fully  with the other
party.

              (v) INFORMATION SUPPLIED. Each of Adatom and HealthCore agree that
none of the  information  supplied  or to be  supplied  by it for  inclusion  or
incorporation by reference in (a) the  Registration  Statement on Form S-4 to be
filed with the SEC by HealthCore  in  connection  with the issuance of shares of
HealthCore  Common Stock in the Merger  (including the joint proxy statement and
prospectus (the "Prospectus/Proxy  Statement") constituting a part thereof) (the
"S-4 Registration  Statement") will, at the time the S-4 Registration  Statement
becomes  effective under the Securities Act,  contain any untrue  statement of a
material fact or omit to state any material  fact required to be stated  therein
or  necessary  to make  the  statements  therein,  not  misleading,  and (b) the
Prospectus/Proxy  Statement and any amendment or supplement thereto will, at the
date of mailing to stockholders and at the times of the meetings of

                                       28

<PAGE>

stockholders  of Adatom and HealthCore to be held in connection with the Merger,
contain any untrue  statement  of a material  fact or omit to state any material
fact required to be stated  therein or necessary in order to make the statements
therein,  in  light  of the  circumstances  under  which  they  were  made,  not
misleading.

              (vi)  STOCKHOLDER  MEETINGS.  Adatom will take, in accordance with
its  articles of  incorporation  and bylaws,  all action  necessary to convene a
meeting of holders of Adatom Common Stock (the  "Stockholders  Meeting"),  to be
held as promptly as practicable after the S-4 Registration Statement is declared
effective,  to consider and vote upon the approval of the Merger, and shall take
all lawful action to solicit such approval.  HealthCore will take, in accordance
with its  certificate  of  incorporation  and bylaws,  all action  necessary  to
convene a meeting of holders of HealthCore  Common Stock and HealthCore  Class B
Common Stock (the "HealthCore  Stockholders Meeting"), to be held as promptly as
practicable  after the S-4  Registration  Statement  is declared  effective,  to
consider  and  vote  upon  the  approval  of the  Merger  and  the  transactions
contemplated  thereby,  including,  without limitation,  (A) the issuance of the
HealthCore  Common  Stock  in the  Merger,  (B) the  election  to the  Board  of
Directors of those individuals described in Section 1.5 hereof, (C) the approval
of the  termination of the Escrow  Agreement in accordance with the terms of the
Termination  Agreements,  and  (D)  adoption  of  the  Stock  Option  Plan,  and
HealthCore's  Board  of  Directors,   subject  to  fiduciary  obligations  under
applicable law or as otherwise  permitted under this  Agreement,  will recommend
the  HealthCore  Recommendation,  will not  withdraw  or modify  the  HealthCore
Recommendation and will take all lawful action to solicit such approval.

              (vii) FILINGS; OTHER ACTIONS; NOTIFICATION.

                   (A) Adatom and  HealthCore  shall  promptly  prepare and file
with the SEC the  Prospectus/Proxy  Statement,  and HealthCore shall prepare and
file with the SEC the S-4  Registration  Statement  as promptly as  practicable.
Adatom and HealthCore each shall use its reasonable best efforts to have the S-4
Registration  Statement  declared effective under the Securities Act as promptly
as   practicable   after  such  filing,   and  promptly   thereafter   mail  the
Prospectus/Proxy  Statement to the respective stockholders of each of Adatom and
HealthCore.  HealthCore  shall also use its  reasonable  best  efforts to obtain
prior to the  effective  date of the S-4  Registration  Statement  all necessary
state securities law or "blue sky" permits and approvals  required in connection
with the Merger and to consummate the other  transactions  contemplated  by this
Agreement.

                   (B)  Adatom  and  HealthCore  each  shall use all  reasonable
efforts to cause to be delivered  to the other party and its  directors a letter
of its independent  auditors,  dated (i) the date on which the S-4  Registration
Statement shall become effective and (ii) the Closing Date, and addressed to the
other party and its  directors,  in form and  substance  customary for "comfort"
letters  delivered  by  independent   public   accountants  in  connection  with
registration statements similar to the S-4 Registration Statement.

                                       29
<PAGE>
              (viii) ACCOUNTING AND TAXATION.

                   (A) Neither Adatom nor HealthCore shall nor shall they permit
either of their respective  Affiliates to, take or cause to be taken any action,
whether before or after the Effective Time, that would  disqualify the Merger as
a "reorganization"  within the meaning of Section 368(a) of the Internal Revenue
Code of 1989, as amended (the "Code").  Each of Adatom and HealthCore  agrees to
use its reasonable best efforts to cure any impediment to the  qualification  of
the Merger as a  "reorganization"  within the  meaning of Section  368(a) of the
Code.

                   (B) Adatom  shall  instruct  its  accountants  to deliver and
shall use its  reasonable  best efforts to cause such  accountants to deliver to
HealthCore  letters  dated as of the  Closing  Date,  addressed  to  HealthCore,
containing  such  matters as are  customarily  contained  in  auditors'  letters
regarding information about Adatom included in the Proxy/Registration Statement,
which auditors' letters shall be in form and substance  reasonably  satisfactory
to HealthCore.

                   (C) All Returns  required  to be filed by or with  respect to
each party (or any of them) after the date hereof and on or before the Effective
Time shall be prepared and timely filed, in a manner consistent with prior years
and  applicable  laws and  regulations  other  than such  Returns  for which the
failure to file would not have a Material  Adverse  Effect with  respect to such
party.

              (ix)  AFFILIATES.  Attached hereto as Exhibit D is a list of names
and  addresses  of those  Persons  who may,  in the  opinion  of  Adatom  (after
consultation  with outside  legal  counsel),  "Affiliates"  of Adatom within the
meaning of Rule 145 under the  Securities  Act.  Adatom shall  exercise its best
efforts  to  deliver  or  cause  to be  delivered  to  HealthCore,  prior to the
Effective Time, from each affiliate of Adatom  identified in the foregoing list,
a letter in the form attached as Exhibit E (the "Adatom Affiliates Letter"). The
certificates  representing  HealthCore  Common Stock received by such Affiliates
shall bear a customary legend regarding applicable Securities Act restrictions.

              (x) OTHER ACTIONS. HealthCore and Adatom shall not take any action
that would or is reasonably likely to result in any of the  representations  and
warranties  of  HealthCore  or  Adatom,  as the case may be,  set  forth in this
Agreement being untrue in any material respect as of the date made, or in any of
the  conditions  to the Closing set forth in Article VII of this  Agreement  not
being satisfied.

              (xi)  REGISTRATION  RIGHTS  AGREEMENTS.  Simultaneously  with  the
Closing,  the  Surviving  Corporation  shall  enter into a  registration  rights
agreement  with  each of Polan and  Mullikin  (collectively,  the  "Registration
Rights Agreements") in form and substance  reasonably  satisfactory to Polan and
Mullikin,  as the case may be, and Adatom, and each of their respective counsel,
covering the shares of stock in the Surviving Corporation issued or issuable (A)
to Polan (x) in connection that certain Letter Amendment,  dated April 27, 1999,
between Polan and HealthCore, (y) upon the exercise (or conversion in accordance
with the provisions of the

                                       30

<PAGE>

Termination Agreement  contemplated to be executed by Polan, as the case may be)
of warrants to purchase shares to HealthCore  Common Stock heretofore  issued to
Polan,  and (z)  currently  held in escrow in  accordance  with the terms of the
Escrow  Agreement  (the "Polan  Escrowed  Shares");  and (B)  Mullikin  upon the
exercise of options to purchase  shares of  HealthCore  Common  Stock  issued in
connection  with the severance of Mullikin's  employment  with  HealthCore  (the
aggregate shares described in clause (A) and (B) hereof being the  "Registration
Shares").  The  Registration  Rights  Agreement shall provide that (A) Polan and
Mullikin shall have piggy-back  registration  rights for the Registration Shares
with respect to all registration  statements filed by the Surviving  Corporation
other than registration  statements on Forms S-4 and S-8, it being  acknowledged
and  agreed  that  the  Polan  Adatom  Shares  shall  be  registered  on the S-4
Registration Statement, and (B) in the event a registration statement subject to
piggy-back  registration  as described in clause (A) above has not been declared
effective by the SEC with one hundred  twenty (120) days  following the Closing,
Polan and Mullikin shall have the right to demand registration of such shares on
any  appropriate  form  registration  statement  other  than,  and  specifically
excluding,  on a Form S-1 registration  statement,  pursuant to the terms of the
Registration  Rights  Agreements;  provided,  however,  that with respect to the
Polan Escrowed Shares, Polan shall only be permitted to demand such registration
thereof in  accordance  with  clause  (B) above in the event the Polan  Escrowed
Shares shall have been released from escrow prior to the  registration of all of
the other  Registration  Shares  allocable  to Polan.  The  Registration  Rights
Agreement  shall  further  provide that any and all  registration  statements on
which any or all of the  Registration  Shares are included  shall be updated and
kept current for a minimum  period of one (1) year  following  the date on which
such registration statement is declared effective by the SEC.

              (xii)  BARTON  EMPLOYMENT   AGREEMENT.   Simultaneously  with  the
Closing, the Surviving Corporation shall enter into an employment agreement with
Barton on terms  mutually  agreeable  to Barton and the  Surviving  Corporation,
including,  without  limitation,  (A) an annual  salary of Two Hundred  Thousand
($200,000) Dollars, (B) an annual bonus equal to One Hundred Thousand ($100,000)
Dollars  (which  bonus  shall be  based  upon  certain  goals  set  forth in the
Surviving  Corporation's  business plan), and (C) the use during the term of his
employment of a luxury automobile leased by the Surviving Corporation.

              (xiii) ADVICE OF CHANGES;  SEC DOCUMENTS.  Each party shall confer
on a regular and frequent basis with the other,  report on  operational  matters
and promptly  advise the other orally and in writing of (A) any material  notice
or other  communication  from any third party  alleging that the consent of such
third  party  is  or  may  be  required  in  connection  with  the  transactions
contemplated by this Agreement;  (B) any material notice or other  communication
from any regulatory authority or national securities exchange in connection with
the  transactions  contemplated  by this  Agreement;  (C) any  claims,  actions,
proceedings  or  investigations  commenced  or,  to the  best  of  such  party's
knowledge, threatened, involving or affecting such party, or any of its property
or assets, or, to the best of such party's knowledge, any employee,  consultant,
director or officer,  in his or her capacity as such, of such party,  which,  if
pending on the date hereof, would have been required to have been disclosed in a
HealthCore SEC Document or the Adatom Disclosure  Schedule,  as the case may be,
or which  relates to the  consummation  of the Merger or the other  transactions
contemplated  by this  Agreement;  and (D) any change or event that would have a
Material  Adverse  Effect with respect to such party.  Each

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party shall  promptly  provide the other (or its counsel)  copies of all filings
made by such  party  with  any  Governmental  Entity  in  connection  with  this
Agreement and the transactions contemplated hereby.

              (XIV)  COMPLIANCE  WITH  LAWS.  Each party  agrees to conduct  its
business in compliance  with all applicable  laws and  regulations  except where
failure to comply would not have a Material Adverse Effect on such party.

              (XV) REGULATORY MATTERS. Each party agrees to promptly, and in any
event no later than ten business  days after the date  hereof,  prepare and file
all applications,  notices,  consents and other documents necessary or advisable
to obtain the state  regulatory  approvals  specified  in the Adatom  Disclosure
Schedule or the HealthCore  Disclosure  Schedule,  as the case may be,  promptly
file all  supplements or amendments  thereto and use all  reasonable  efforts to
obtain the regulatory  approvals  specified in the Adatom Disclosure Schedule or
the  HealthCore  Disclosure  Schedule,  as the  case  may  be,  as  promptly  as
practicable. Each party shall provide to the other party and its counsel (A) the
opportunity to review in advance and comment on all such filings with regulatory
authorities  and rating  agencies  relating to this  transaction and all written
communications  with respect  thereto a reasonable time prior to such filings or
written  communications,  (B) prompt  notice of all contacts by such  regulatory
authorities and rating agencies, and (C) with respect to any regulatory approval
or review  required  by any state,  the right to approve  any  filings,  written
communications  and the substance of any oral  communications and to participate
in any meetings.  Each party will keep the other party informed of the status of
matters relating to obtaining the regulatory  approvals  specified in the Adatom
Disclosure  Schedule  and will  promptly  furnish  such party with copies of all
written communications with respect thereto.

         (b) NASDAQ LISTING AND TRADE  SYMBOLS.  HealthCore and Adatom shall use
their respective best efforts to cause the HealthCore  Common Stock to be issued
in the Merger to be approved for listing on the NASDAQ Small Cap Market, subject
to official notice of issuance, prior to the Closing Date. HealthCore and Adatom
shall use their respective best efforts to maintain  HealthCore's current NASDAQ
Small-Cap listing under its trading symbols "HMSI", "HMSIU", and "HMSIW".

         (c)  POST-CLOSING   COVENANTS.   Adatom  hereby  covenants  and  agrees
subsequent to the Closing of the Merger, the Surviving  Corporation shall comply
with the following:

              (i) SPECIAL MEETING OF SHAREHOLDERS. In the event two-thirds (2/3)
of the  shareholders of HealthCore  eligible to vote thereon fail to approve the
termination  of the  Escrow  Agreement  and the  approval  and  adoption  of the
Termination  Agreements  (as such terms are  defined in Section  6.5 hereof) the
Board of Directors of the Surviving  Corporation shall call a special meeting of
the shareholders as soon as reasonably  practicable  following the Closing Date,
and shall recommend that the  shareholders of the Surviving  Corporation vote in
favor of (A) the termination of the Escrow  Agreement,  and (B) the approval and
adoption of the Termination Agreement.

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<PAGE>

              (ii) S-8  REGISTRATION.  The Surviving  Corporation  shall use its
best efforts, but in no event later than thirty (30) days following the Closing,
to file with the SEC a  registration  statement on Form S-8 (or any successor or
other  appropriate  forms) to register all shares of the  Surviving  Corporation
eligible for registration  thereunder,  including,  without  limitation,  and if
eligible to be placed on a Form S-8, the Polan Shares,  and the shares issued to
Mullikin  upon his  exercise  of  options  to  purchase  such  shares  described
hereinabove.

         6.4  COVENANTS  OF POLAN.  In order to induce  Adatom  to  execute  and
deliver this  Agreement,  Polan hereby  irrevocably  covenants  and agrees that,
except  as  expressly   contemplated  or  permitted  by  this   Agreement,   (i)
simultaneously with the Closing,  Polan shall elect to convert all of the shares
of HealthCore  Class B Common Stock held by him into HealthCore  Common Stock in
accordance  with  the  relevant   provisions  of  HealthCore's   Certificate  of
Incorporation,  (ii) Polan  shall vote all of the shares of stock in  HealthCore
entitled  to be voted on the  Merger  beneficially  owned by him in favor of the
consummation  of the  Merger  and the other  transactions  contemplated  by this
Agreement  (iii) from the execution of this Agreement and until the Closing Date
or earlier termination  hereof,  Polan shall not sell or otherwise transfer more
than fifty  thousand  (50,000)  shares of HealthCore  Common Stock or HealthCore
Class B Common Stock.

         6.5 COVENANTS OF THE ADATOM SHAREHOLDERS. In order to induce HealthCore
to execute  and  deliver  this  Agreement,  each of the  shareholders  of Adatom
irrevocably  covenants  and agrees to vote the shares of stock in the  Surviving
Corporation  held thereby (i) in favor of the consummation of the Merger and the
other  transactions  contemplated  by this  Agreement,  and  (ii)  in the  event
two-thirds (2/3) of the shareholders of HealthCore entitled to vote thereon fail
to approve and adopt the  Termination  Agreements (as hereinafter  defined),  in
favor of terminating  that certain  Amended and Restated  Escrow  Agreement (the
"Escrow  Agreement"),  dated July 31, 1997,  among  HealthCore,  American  Stock
Transfer and Trust Company and the  stockholders of HealthCore who have executed
the Escrow Agreement, in accordance with the terms of the Termination Agreements
(each  a   "Termination   Agreement",   and   collectively,   the   "Termination
Agreements"))  in  substantially  the form  attached  hereto as  Exhibit F to be
executed by each of the holders of the shares of HealthCore Common Stock held in
escrow  pursuant  to the  Escrow  Agreement  (such  holders  being  the  "Escrow
Shareholders").

                                  ARTICLE VII
                              CONDITIONS PRECEDENT

         7.1 CONDITIONS TO THE  OBLIGATIONS OF ADATOM TO EFFECT THE MERGER.  The
obligations of Adatom to consummate  the  transactions  contemplated  hereby are
subject to the satisfaction of the following conditions, the imposition of which
is  solely  for the  benefit  of  Adatom  and any  one or more of  which  may be
expressly waived by Adatom, in its sole discretion, except as otherwise required
by law:

         (a) ACCURACY OF REPRESENTATIONS AND WARRANTIES. The representations and
warranties  of HealthCore  contained  herein shall have been true and correct in
all material  respects when made,  and shall be true and correct in all material
respects at and as of the  Closing  Date as though made on and as of the Closing
Date (except to the extent that any such

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<PAGE>

representation and warranty had by its terms been made as of a specific date, in
which case such  representation and warranty shall have been true and correct in
all material respects as of such specific date),  other than inaccuracies in the
representations  and  warranties  contained in Sections 5.2 (j),  (k), (l), (o),
(p), (q) and/or (t), arising as a result of, or in connection with, HealthCore's
sale  or  liquidation  of  the  HealthCore  Business  as  contemplated  by  this
Agreement.  Adatom  shall have  received a  certificate  dated the Closing  Date
signed by an executive  officer of HealthCore  certifying to the  fulfillment of
this condition.

         (b) PERFORMANCE OF AGREEMENTS.  HealthCore  shall have performed in all
material  respects all  obligations  and agreements and complied in all material
respects  with all covenants and  conditions  contained in this  Agreement to be
performed and complied with by it at or prior to the Closing Date.  Adatom shall
have  received a  certificate  dated the  Closing  Date  signed by an  executive
officer of HealthCore certifying to the fulfillment of this condition.

         (c) NO  MATERIAL  ADVERSE  CHANGE.  Since  the date  hereof,  except as
contemplated by this Agreement, no change or event shall have occurred which has
had or could  reasonably  be  expected  to have a Material  Adverse  Effect with
respect  to  HealthCore;  it being  understood  that  HealthCore  shall  sell or
liquidate  the  HealthCore  Business in accordance  with Section  6.2(b) of this
Agreement.

         (d) SALE OR LIQUIDATION OF HEALTHCORE  BUSINESS.  HealthCore shall have
consummated the sale or liquidation, or have entered into a binding contract for
the sale (which contract shall be in a form reasonably  satisfactory to Adatom),
of the  HealthCore  Business,  and  shall,  in  connection  therewith,  (i) have
terminated all of HealthCore's existing employment relationships with all of its
employees,  including,  but not  limited  to,  its  key  executives,  Polan  and
Mullikin,  and  (ii)  terminate,  cancel  or  assign  all  material  contractual
commitments  and other  material  obligations  arising  in  connection  with the
HealthCore Business.

         (e) RESIGNATION OF OFFICERS AND DIRECTORS. Each officer and director of
HealthCore shall have tendered his or her  resignation,  or have been terminated
by HealthCore.

         (f) MINIMUM CLOSING CASH AMOUNT. The Closing Cash Amount, as calculated
in accordance with the terms of Section 3.2(a) hereof, shall be no less than Two
Million ($2,000,000) Dollars.

         (g) HEALTHCORE LOCK-UP  AGREEMENTS.  Polan and Mullikin shall each have
executed a lock-up  agreement in form and substance  reasonably  satisfactory to
Polan and Mullikin, as the case may be, and Adatom, and each of their respective
counsel (collectively, the "HealthCore Lock-up Agreements") covering any and all
shares of HealthCore  Common Stock owned directly by, or issuable (upon exercise
of options or  warrants  to  purchase  the same) to, (i) Polan as of the Closing
Date (such shares being the "Polan  Shares"),  and (ii) Mullikin in severance of
his  employment  relationship  with  HealthCore  (the  "Mullikin  Shares").  The
HealthCore  Lock-Up  Agreements  shall provide that the shares  covered  thereby
shall be subject to a six (6) month lock-up, prohibiting the sale, assignment or
transfer   thereof   during   such  six  (6)  month   period;   provided   that,
notwithstanding  the  foregoing,  Polan shall be  permitted  to transfer up to a
maximum of one hundred  twenty-five  thousand (125,000) Polan Shares at any time
upon the expiration of two (2) months following the Closing Date.

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<PAGE>

         (h) RECAPITALIZATION OF HEALTHCORE CAPITAL STRUCTURE.  HealthCore shall
have  recapitalized  its  capital  structure  such that the holders of shares of
HealthCore  Class B Common Stock shall have  converted  the  HealthCore  Class B
Common  Stock  into  shares  of  HealthCore  Common  Stock..  As a result of the
foregoing,  immediately  prior to the Closing the  capitalization  of HealthCore
shall consist of HealthCore Common Stock, the rights set forth in Section 5.2(b)
hereof or in Section 5.2(b) of the HealthCore Disclosure Schedule, and the Stock
Option Plan.

         7.2  CONDITIONS TO THE  OBLIGATIONS OF HEALTHCORE TO EFFECT THE MERGER.
The   obligations   of  HealthCore   under  this  Agreement  to  consummate  the
transactions  contemplated  hereby  are  subject  to  the  satisfaction  of  the
following  conditions,  the  imposition  of which is solely  for the  benefit of
HealthCore  and any one or more of which may be expressly  waived by HealthCore,
in its sole discretion, except as otherwise required by law:

         (a) ACCURACY OF REPRESENTATIONS AND WARRANTIES. The representations and
warranties  of Adatom  contained  herein shall have been true and correct in all
material  respects  when made,  and shall be true and  correct  in all  material
respects at and as of the  Closing  Date as though made on and as of the Closing
Date (except to the extent that any such  representation and warranty had by its
terms been made as of a  specific  date in which  case such  representation  and
warranty shall have been true and correct as of such specific date).  HealthCore
shall have received a certificate  dated the Closing Date signed by an executive
officer of Adatom certifying to the fulfillment of this condition.

         (b)  PERFORMANCE  OF  AGREEMENTS.  Adatom  shall have  performed in all
material  respects all  obligations  and agreements and complied in all material
respects  with all  covenants  and  conditions  contained  in this  Agreement or
otherwise  contemplated  hereby to be performed  and  complied  with by it at or
prior to the Closing Date.  HealthCore  shall have received a certificate  dated
the Closing  Date signed by an  executive  officer of Adatom  certifying  to the
fulfillment of this condition.

         (c) NO MATERIAL  ADVERSE CHANGE.  Since December 31, 1998, no change or
event shall have occurred which has had or could  reasonably be expected to have
a Material Adverse Effect with respect to Adatom, other than losses sustained by
Adatom in connection with the operation of its business.

         (d) ADATOM LOCK-UP  AGREEMENT.  Each of the Adatom  shareholders  shall
have  executed  the Adatom  Lock-up  Agreement  covering the Adatom Newly Issued
Shares.

         (e) FAIRNESS OPINION. HealthCore shall have received a fairness opinion
from an  investment  banking firm mutually  agreeable to  HealthCore  and Adatom
rendering  an opinion  that the Merger is fair and  reasonable  from a financial
point of view to HealthCore's shareholders as of the date the Board of Directors
of HealthCore approves this Agreement and as of the date the HealthCore Proxy is
mailed to HealthCore's shareholders.

         7.3  CONDITIONS TO THE  OBLIGATIONS  OF HEALTHCORE AND ADATOM TO EFFECT
THE MERGER. The respective  obligations of each party to effect the Merger shall
be  subject  to the  satisfaction  prior to the  Closing  Date of the  following
conditions:

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<PAGE>

         (a)  SHAREHOLDER   APPROVAL.   This  Agreement,   the  Merger  and  the
transaction  contemplated hereby and thereby,  other than the termination of the
Escrow  Agreement in accordance  with the terms of the  Termination  Agreements,
shall have been  approved and adopted by the  affirmative  vote of a majority of
the  outstanding  shares of  HealthCore  entitled to vote on the  Merger,  which
majority  (i) shall not  include  the vote of the shares of the Common  Stock of
HealthCore  owned  directly by Polan,  and (ii)  notwithstanding  the foregoing,
shall  include  Polan's  vote as  proxy of the  shares  of the  Common  Stock of
HealthCore  held by the Escrow  Shareholders;  the  proxies to vote such  shares
having been granted pursuant to the terms of the Exchange Agreements.

         (b) APPRAISAL RIGHTS.  The holders of no more than five (5%) percent of
the outstanding  shares of HealthCore  entitled to vote on the Merger shall have
exercised their appraisal rights under Section 262 of the DGCL.

         (c) S-4 REGISTRATION  STATEMENT.  The S-4 Registration  Statement shall
have become  effective  under the Securities  Act. No stop order  suspending the
effectiveness of the S-4 Registration  Statement shall have been issued,  and no
proceeding for that purpose shall have been initiated or threatened by the SEC.

         (d) BLUE SKY LAWS.  HealthCore shall have received all state securities
or "Blue Sky" permits and other authorizations  necessary to issue the shares of
HealthCore Common Stock.

         (e) NO  INJUNCTIONS  OR  RESTRAINTS.  No temporary  restraining  order,
preliminary  or  permanent  injunction  or other  order  issued  by any court of
competent jurisdiction or other legal restraint or prohibition (an "Injunction")
restraining or preventing the consummation of the Merger or subjecting any party
or any of its Affiliates to substantial  damages as a result of the consummation
of the Merger shall be in effect;  provided,  however,  that the party  invoking
this  condition  shall have used  reasonable  best  efforts to have vacated such
Injunction.

         (f)  GOVERNMENTAL AND REGULATORY  CONSENTS.  All filings required to be
made prior to the Effective Time with, and all consents,  approvals, permits and
authorizations  required  to be  obtained  prior  to the  Effective  Time  from,
Governmental  Entities,  including,  without limitation,  those set forth in the
Adatom  Disclosure  Schedule,  in connection  with the execution and delivery of
this Agreement and the consummation of the transactions  contemplated  hereby by
Adatom will have been made or obtained (as the case may be).

                                  ARTICLE VIII
                          SURVIVAL AND INDEMNIFICATION

         8.1 SURVIVAL. All representations and warranties made in this Agreement
shall  survive  the  delivery  of this  Agreement  for a period  of one (1) year
following  the  Closing  Date.  Notwithstanding  the  foregoing,  any  claim for
indemnification  that is asserted  by written  notice as

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<PAGE>

provided in Section 8.4 within the survival  period shall survive until resolved
pursuant to a final non-appealable judicial determination or otherwise.

         8.2  INDEMNIFICATION  OF HEALTHCORE.  The Surviving  Corporation  shall
indemnify,  defend and hold the HealthCore Former  Shareholders from and against
any and all loss, damage, cost or expense,  including reasonable attorneys' fees
and expenses (collectively,  "Losses"), caused by any misrepresentation,  breach
of  warranty  or failure to fulfill any  covenant  or  agreement  made by Adatom
contained herein (the aggregate monetary sum of such indemnification obligations
being the "Adatom Indemnification Amount").

         8.3   INDEMNIFICATION  OF  ADATOM.  The  Surviving   Corporation  shall
indemnify,  defend and hold  harmless the Adatom  Former  Shareholders  from and
against any and all Losses caused by any  misrepresentation,  breach of warranty
or failure to fulfill any covenant or  agreement  made by  HealthCore  contained
herein (the aggregate monetary sum of such indemnification obligations being the
"HealthCore Indemnification Amount").

         8.4  BASKET;  LIMITATION  OF  LIABILITY.  The  Surviving  Corporation's
obligation to indemnify the Adatom Former  Shareholders or the HealthCore Former
Shareholders,  as the case may be, from and  against any Losses  shall not arise
unless  and  until the  Adatom  Former  Shareholders  or the  HealthCore  Former
Shareholders, as the case may be, shall have suffered aggregate Losses in excess
of One Hundred Thousand ($100,000) Dollars (the "Indemnification Threshold"). In
the  event  the  Losses  suffered  by  the  Adatom  Former  Shareholders  or the
HealthCore Former  Shareholders,  as the case may be, exceed the Indemnification
Threshold,  the Surviving  Corporation  shall only be obligated to indemnify the
Adatom Former  Shareholders or the HealthCore Former  Shareholders,  as the case
may be,  from and  against  aggregate  Losses in  excess of the  Indemnification
Threshold. In no event shall the Surviving Corporation's obligation to indemnify
the Adatom Former Shareholders and the HealthCore Former Shareholders exceed, in
each case, the aggregate sum of Five Hundred Thousand ($500,000) Dollars.

         8.5 NET  INDEMNIFICATION  AMOUNT.  Notwithstanding  anything  contained
herein to the contrary, the Surviving Corporation's  indemnification obligations
hereunder shall,  subject to the provisions of Section 8.4 hereof, be limited to
the difference (such difference being the "Net Indemnification Amount"), if any,
as at the Indemnification  Adjustment Date, between the Surviving  Corporation's
obligation to indemnify (i) the Adatom Former  Shareholders  pursuant to Section
8.2 hereof (the aggregate monetary sum of such indemnification obligations being
the  "Adatom   Indemnification   Amount"),   and  (ii)  the  HealthCore   Former
Shareholders  pursuant to Section 8.2 hereof (the aggregate monetary sum of such
indemnification  obligations being the "HealthCore Indemnification Amount"). The
Net Indemnification  Shares shall be issuable, in accordance with the provisions
of Section 3.2(b) hereof, to (i) the Adatom Former Shareholders in the event the
Adatom  Indemnification  Amount is greater than the  HealthCore  Indemnification
Amount,  or to  (ii)  the  HealthCore  Former  Shareholders  in  the  event  the
HealthCore  Indemnification  Amount is greater  than the Adatom  Indemnification
Amount.

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<PAGE>

         8.6 GENERAL PROVISIONS RELATED TO INDEMNIFICATION.

         (a) The party  entitled to  indemnification  shall take all  reasonable
steps to mitigate  all  indemnifiable  liabilities  and  damages  upon and after
becoming aware of any event which  reasonably  could be expected to give rise to
any liabilities and damages that are indemnifiable  hereunder. No party shall be
entitled to indemnification to the extent of any available insurance relating to
any indemnifiable claim.

         (b) The party seeking  indemnification shall give written notice to the
indemnifying  party of the facts and circumstances  giving rise to any claim for
indemnification  as soon as  reasonably  possible but in any event within thirty
(30) days after obtaining knowledge of the basis for a claim for indemnification
hereunder.  With respect to each third party claim  subject to this Article 8 (a
"Third  Party  Claim"),  the party  seeking  indemnification  shall give  prompt
written notice to the indemnifying party of the Third Party Claim.

                                   ARTICLE IX
                            TERMINATION AND AMENDMENT

         9.1  TERMINATION.  This  Agreement  may be  terminated  and the  Merger
contemplated  hereby may be  abandoned at any time prior to the  Effective  Time
whether before or after approval by the shareholders of Adatom and HealthCore:

         (a) by mutual written consent of HealthCore and Adatom;

         (b) by either  HealthCore or Adatom if there has been a material breach
of any representation, warranty, covenant or agreement on the part of Adatom, on
the one hand, or HealthCore, on the other hand, as the case way be, set forth in
this Agreement  which breach,  if not a willful breach has not been cured within
ten (10)  Business  Days  following  receipt by the  breaching  party of written
notice of such breach;

         (c) by either  HealthCore  or Adatom if the Merger  shall not have been
consummated  before the Termination Date (or such later date as may be agreed to
by HealthCore and Adatom);  provided,  however, that neither party may terminate
this Agreement  under this Section 9.1(c) if the failure has been caused by such
party's material breach of this Agreement;

         (d) by either  HealthCore  or Adatom if this  Agreement  shall  fail to
receive the  requisite  vote for approval and  adoption by the  shareholders  of
HealthCore at the HealthCore Shareholders' Meeting;

         (e) by either  HealthCore  or Adatom if (i) the Board of  Directors  of
HealthCore  shall have recommended to the shareholders of HealthCore a Qualified
Transaction Proposal; (ii) a tender offer (not including a self-tender offer) or
exchange offer for shares of capital stock of HealthCore,  which would result in
the  beneficial  ownership  by any Person or any  "group" (as defined in Section
13(d) of the Exchange Act and the rules and regulations  promulgated thereunder)
of more than 25% of the  outstanding  shares of any  class of  capital  stock of
HealthCore,  is commenced,  and the Board of Directors of HealthCore  recommends
that the  shareholders  of  HealthCore  tender  their  shares in such  tender or
exchange offer; or (iii) any Person shall have acquired beneficial  ownership or
the right to acquire  beneficial  ownership  of,

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<PAGE>

or any "group" shall have been formed which  beneficially owns, or has the right
to acquire  "beneficial  ownership"  of,  more than 25% of the then  outstanding
shares of any class of capital stock of HealthCore; or

         (f) by  HealthCore  or Adatom if a court of competent  jurisdiction  or
other Governmental  Entity shall have issued an order, decree or ruling or taken
any  other  action   restraining,   enjoining  or  otherwise   prohibiting   the
consummation of the Merger and such order, decree,  ruling or other action shall
have become final and nonappealable.

         9.2 EFFECT OF  TERMINATION.  In the event this  Agreement is terminated
and the Merger abandoned pursuant to Section 9.1, all further obligations of the
parties  hereunder  shall  terminate  except that the  obligations  set forth in
Sections 6.3(a)(i) and this Section 9.2 shall survive, the Note shall become due
and  payable  in  accordance  with the terms  thereof;  provided  that,  if this
Agreement is so terminated  by a party because one or more of the  conditions to
such party's  obligations  hereunder  is not  satisfied as a result of the other
party's  willful or knowing  failure to comply with its  obligations  under this
Agreement, the terminating party's right to pursue all legal remedies for breach
of  contract or  otherwise,  including,  without  limitation,  damages  relating
thereto, shall also survive such termination unimpaired.

                                   ARTICLE X
                               GENERAL PROVISIONS

         10.1 CERTAIN  DEFINITIONS.  As used in this  Agreement,  the  following
terms shall have the meanings set forth in this Section 10.1:

         (a)  "Affiliate"  means,  with respect to any Person,  any other Person
that, directly or indirectly,  through one or more intermediaries,  controls, is
controlled by, or is under common control with, such first Person.

         (b) "Agent" means, with respect to any Person,  such Person's officers,
directors,  employees,  attorneys,  accountants,  investment bankers,  financial
advisors or other representatives or agents.

         (c) "Business Day" means any day other than a day on which (i) banks in
the  State of New York are  authorized  or  obligated  to be  closed or (ii) the
NASDAQ National Market is closed.

         (d)  "Debt"  of  any  Person  means,  without   duplication,   (i)  all
indebtedness  of such Person for borrowed  money  (whether  on-balance  sheet or
off-balance  sheet);  (ii) all  obligations  of such Person  evidenced by notes,
bonds,  debentures or other similar  instruments;  (iii) all obligations of such
Person as lessees under leases that have been or should be, in  accordance  with
GAAP, recorded as capital leases; (iv) all obligations, contingent or otherwise,
of  such  Person  under  banker's  acceptance,   letter  of  credit  or  similar
facilities; (v) all Debt of others referred to in clauses (i) through (iv) above
guaranteed  directly or  indirectly  in any manner by such Person;  and (vi) all
Debt of others  referred to in clauses (i) through (v) above  secured by (or for
which the holder of such Debt has an existing right, contingent or otherwise, to
be secured

                                       39

<PAGE>

by) any Lien on property (including,  without limitation,  accounts and contract
rights) owned by such Person,  even though such Person has not assumed or become
liable for the payment of such Debt.

         (e) "Governmental  Entity" and  "Governmental  Entities" shall mean any
foreign,   federal,   state,  municipal  or  other  governmental  or  regulatory
department, commission, board, bureau, agency or instrumentality.

         (f) "Material  Adverse Effect" means,  with respect to any Person,  any
change or effect that is or is reasonably likely to be materially adverse to the
business, assets,  properties,  operations or condition (financial or otherwise)
of such Person taken as a whole or adversely  affects the ability of such Person
to consummate the  transactions  contemplated  by this Agreement in any material
respect.  For the purposes of this Agreement,  where "Material" can be expressed
as a  monetary  sum,  any sum in  excess  of One  Hundred  Twenty-Five  Thousand
$125,000 Dollars shall be deemed to "Material".

         (g) "Person"  means any  individual,  corporation,  partnership,  firm,
group (as such term is used in Section  13(d)(3)  of the  Exchange  Act),  joint
venture,   association,   trust,   limited  liability  company,   unincorporated
organization, estate, trust or other entity.

         (h) "SEC" means the Securities and Exchange Commission.

         (i)  "Subsidiary"'  of any Person means any  corporation,  partnership,
joint  venture or other legal  entity of which such Person  (either  directly or
through or together with any other Subsidiary of such Person), owns, directly or
indirectly,  50% or more of the stock or other equity  interests  the holders of
which are generally  entitled to vote for the election of the board of directors
or similar  governing body of such  corporation,  partnership,  joint venture or
other legal entity.

         (j) "Termination Date" shall mean September 30, 1999.

         10.2 NOTICES. All notices and other  communications  hereunder shall be
in writing and shall be deemed given when delivered  personally,  upon a receipt
of a transmittal confirmation if sent by facsimile or like transmission,  and on
the next  Business  Day when sent by Federal  Express,  Express  Mail or similar
overnight courier service to the parties at the following addresses or facsimile
numbers (or at such other  address or  facsimile  number for a party as shall be
specified by like notice):

         If to HealthCore:

              HealthCore Medical Solutions, Inc.
              405 Lexington Avenue, 50th Floor
              New York, NY  10174
              Attn:  Mr. Neal Polan, Chief Executive Officer
              Facsimile:  (917) 368-3601

                                       40
<PAGE>

         with a copy to:

              HealthCore Medical Solutions, Inc.
              11904 Blue Ridge Ext.
              Grandview, MO 64030
              Facsimile:  (816) 765-6573
              Attn:  David L. Mullikin, President

         and to:

              Epstein Becker & Green, P.C.
              250 Park Avenue
              New York, NY 10177
              Attn:  Seth I. Truwit, Esq.
              Facsimile:  (212) 351-4709

         If to Adatom:

              Adatom, Inc.
              920 Hillview Court, Suite 160
              Milipitas, Ca  95035
              Attn:  Mr. Richard Barton, President
              Facsimile:  (561) 364-0771

         with a copy to:

              McCutchen, Doyle, Brown & Enersen, LLP
              Three Embarcadero Center
              San Francisco, CA 94111
              Attention: Hank Evans, Esq.
              Facsimile: (415) 393-2286

         10.3  INTERPRETATION.  When a reference  is made in this  Agreement  to
Sections,  such  reference  shall  be to a  Section  of  this  Agreement  unless
otherwise  indicated.  The table of  contents  and  headings  contained  in this
Agreement  are for  reference  purposes only and shall not affect in any way the
meaning or  interpretation  of this  Agreement.  Whenever  the words  "include,"
"includes" or "including" are used in this Agreement, they shall be deemed to be
followed by the words "without  limitation." The phrase "made available" in this
Agreement shall mean that the information referred to has been made available if
requested by the party to whom such information is to be made available.  Dollar
amounts  referred  to in this  Agreement  shall not be deemed to  establish  any
standard of materiality.

         10.4 WAIVERS AND AMENDMENTS. This Agreement may be amended, superseded,
canceled,  renewed or  extended,  and the terms  hereof  may be waived,  only by
written instruments signed by the parties to this Agreement, or in the case of a
waiver,  by the party  waiving  compliance.  Except where a specific  period for
action  or  inaction  in  provided  herein,  no  delay

                                       41

<PAGE>

on the part of a party in  exercising  any right,  power or privilege  hereunder
shall operate as a waiver thereof.  Neither any waiver on the part of a party of
any such right,  power or privilege,  nor any single or partial  exercise of any
such right,  power or privilege,  shall preclude any further exercise thereof or
the exercise of any other such right, power or privilege.

         10.5 EXPENSES AND OTHER PAYMENTS.

         (a) Any brokers fees and/or commissions  payable in connection with the
Merger  shall  be  paid  immediately  following  the  Closing  by the  Surviving
Corporation,  other than any required equity payments to the Brokers which shall
be includable in the number of shares of Adatom Common Stock  outstanding  prior
to the Closing as provided in Section 3.1(b) hereof, which equity payments shall
be included  within the aggregate  number of shares of  HealthCore  Common Stock
received  by the  Adatom  shareholders  in  accordance  with the  provisions  of
Articles II and III  hereof.  The  out-of-pocket  expenses  (including,  without
limitation,  professionals'  fees and expenses and  investment  banking fees and
expenses and fees and  expenses  relating to the  fairness  opinion  referred to
herein)   incurred  by  each  party  in  connection  with  the  Merger  and  the
transactions  contemplated thereby  (collectively,  the "Transaction  Expenses")
shall be deemed  to be a  liability  of,  and  shall be paid by,  the  Surviving
Corporation following the Closing; it being understood that the aggregate sum of
any and all  reasonable  Transaction  Expenses paid by  HealthCore  prior to the
Closing shall be deemed to be included in the Closing Cash Amount.  In the event
the Merger is not consummated other than by reason of a termination  pursuant to
Section  9.1(b)  hereof,  each party shall bear that portion of the  Transaction
Expenses  incurred  by it in  connection  with the Merger  and the  transactions
contemplated  thereby and hereby.  In the event this Agreement is terminated (i)
by HealthCore pursuant to Section 9.1(b),  Adatom shall reimburse HealthCore for
all of HealthCore's Transaction Expenses,  including, without limitation, all of
its  reasonable  legal,  accounting  and  investment  banking  fees and expenses
relating to the Merger, or (ii) by Adatom pursuant to Section 9.1(b), HealthCore
shall  reimburse  Adatom for all of Adatom's  Transaction  Expenses,  including,
without  limitation,  all of its  reasonable  legal,  accounting  and investment
banking  fees and  expenses  relating to the Merger  (other  than fees,  if any,
payable to the Brokers).

         (b) Any payment  required to be made pursuant to Section  10.5(a) shall
be made an promptly as  practicable  but not later than ten (10)  Business  Days
after  termination  of this  Agreement  and  shall be made by wire  transfer  of
immediately  available  funds to an account  designated by the party entitled to
receipt of such payment.

         10.6  ASSIGNMENT.  Neither  this  Agreement  nor  any  of  the  rights,
interests or  obligations  hereunder  shall be assigned by either of the parties
hereto  (whether by operation  of law or  otherwise)  without the prior  written
consent of the other party.  Subject to the preceding  sentence,  this Agreement
will be binding upon,  inure to the benefit of and be enforceable by the parties
and their respective successors and assigns.


                                       42


<PAGE>


         10.7 ENTIRE  AGREEMENT;  NO THIRD PARTY  BENEFICIARIES.  This Agreement
(including the documents and the instruments referred to herein) (a) constitutes
the entire  agreement and  supersedes all prior  agreements and  understandings,
both written and oral,  between the parties  with respect to the subject  matter
hereof and (b) is not  intended to confer upon any person other than the parties
hereto any rights or remedies hereunder.

         10.8 GOVERNING  LAW. This Agreement  shall be governed and construed in
accordance  with the laws of the State of New York applicable to agreements made
and to be performed entirely within such state.

         10.9  COUNTERPARTS.  This  Agreement  may be  executed  in one or  more
counterparts,  each of which shall be an original  and all of which,  when taken
together, shall constitute one and the same instrument.

         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
signed by their  respective  officers  thereunto duly  authorized as of the date
first above written.

                                HEALTHCORE MEDICAL SOLUTIONS, INC.

                                         /s/ Neal J. Polan
                                By:      ______________________________________

                                         Name:  Neal J. Polan
                                         Title: Chairman and CEO


                                ADATOM, INC.

                                         /s/ Richard Barton
                                By:      ______________________________________

                                         Name:  Richard Barton
                                         Title: President


                                ACCEPTED AND AGREED WITH RESPECT TO SECTION 6.4
                                HEREOF ONLY:

                                /s/ Neal J. Polan

                                -----------------------------------------------
                                Neal J. Polan



                                       43
<PAGE>
                                ACCEPTED AND AGREED WITH RESPECT TO SECTION 6.5
                                HEREOF ONLY:

                                /s/ Richard Barton

                                -----------------------------------------------
                                  Richard Barton

                                /s/ Chris-Chich Chen

                                -----------------------------------------------
                                  Chris-Chich Chen

                                /s/ Sridhar Jagannathan

                                -----------------------------------------------
                                  Sridhar Jagannathan

                                -----------------------------------------------
                                  Frank Madkins


                                       44


                                   EXHIBIT 99


                  ADATOM, INC.
                  Contact: Richard S. Barton
                           President & CEO
                           (408) 935-7979

                  HEALTHCORE MEDICAL SOLUTIONS, INC.
                  Contact: Sharon Polk
                           (816) 763-4900, ext. 8-2306

                  THE MWW GROUP- Tel. (201) 507-9500
                  Contact: Media Relations -- Matt Messinger ([email protected])
                           Investor Relations -- Robert Ferris ([email protected])

- --------------------------------------------------------------------------------
                                                           FOR IMMEDIATE RELEASE

                  HEALTHCORE MEDICAL SOLUTIONS AND ADATOM, INC.
                            EXECUTE MERGER AGREEMENT

 WEB-BASED RETAILER HEADED BY FORMER XEROX PRESIDENT OF U.S. CUSTOMER OPERATIONS

         Grandview,  MO, July 1, 1999 - HealthCore Medical Solutions and Adatom,
Inc. (Nasdaq:  HMSI) announced today that they have executed a definitive merger
agreement.  Adatom is developing and implementing a business model that includes
its own Internet  superstore,  WWW.ADATOM.COM,  back-end  fulfillment  for other
e-commerce sites as well as website development and e-commerce infrastructure.
         Adatom is a  privately  held  company.  Under  the terms of the  merger
agreement,  HMSI will acquire Adatom in an all-stock  transaction.  All existing
Class A common stock and warrants of HealthCore  Medical  Solutions  will remain
outstanding. The Class B common stock of HMSI will be eliminated and the Class A
common stock of HMSI will be retitled as common stock.  Adatom stockholders will
receive  common stock of HMSI  representing  approximately  77.5% of the Company
subject to adjustment in certain circumstances. Adatom will nominate new members
to HMSI's board of directors.  After the completion of the merger,  HMSI intends
to change its name to Adatom.com, Inc.
         The transaction is expected to close at the end of the third quarter of
1999  subject to the  satisfaction  of certain  conditions  stated in the merger
agreement,  including the divestiture of the current HMSI business, the approval
of the merger and related  transactions by HMSI's and Adatom's  stockholders and
an opinion from an investment  banking firm that the transaction is fair to HMSI
stockholders.



                                     -more-


<PAGE>


ADATOM, INC./MERGER COMPLETION
TAKE 2-2-2-2


         The current  management team of Adatom will assume  comparable roles in
the combined  company.  This team includes Richard Barton,  who is a co-founder,
President and CEO.
         Previously,  Mr. Barton was Chairman, CEO and President of the Canadian
subsidiary  and  President  of the U.S.  Customer  Operations  Division of Xerox
Corporation.  Mr. Barton also currently serves on the board of directors of Avon
and the U.S. Chamber of Commerce.
         Commenting on the contemplated merger, Mr. Barton stated, "By operating
as a  publicly-traded  entity,  Adatom gains more  flexibility  in accessing the
capital  markets  to  most  effectively  and  rapidly   carry-out  our  business
objectives and growth strategies."
         HealthCore and Adatom have retained Jesup & Lamont  Securities to serve
as their  investment  banker.  Jesup & Lamont  will  seek to  secure  additional
near-term financing after the merger.
         Mr. Barton continued,  "Our goal has been to offer the widest selection
of top brand name products on the Internet at competitive prices. We have worked
diligently to establish  relationships  with manufacturers and suppliers and now
offer over 3,000,000  stock-keeping units. Through these relationships,  we have
arranged a system  whereby the  manufacturers  and suppliers have agreed to ship
orders  directly  to our  customers.  This  creates a win-win  scenario  for all
parties.  Our  customers  have  access  to  low  prices  on  the  Internet,  the
manufacturers and suppliers gain additional consumer access and we gain valuable
traffic to our site."
         Mr.  Barton,  concluded,  "We have focused our  resources on creating a
user-friendly site and a comprehensive customer service program. We believe that
this  will  also  be  a  key  differentiating  factor  in  helping  us  maintain
long-standing relationships with our customers."
         For the quarter ended March 31, 1999,  Adatom had an operating  loss of
$297,617.  Adatom presently contemplates that it will continue to have operating
losses in the foreseeable future.
         Under the Adatom business model, goods flow directly from manufacturers
and suppliers to end customers.  This system seeks to reduce operating costs and
pass value onto the consumer in the form of increased customer service and price
savings.  Adatom provides a comprehensive product mix of name brand products for
the  individual,  the home,  and the  office in 26  product  categories  via its
Internet site, WWW.ADATOM.COM.

STATEMENTS IN THIS NEWS RELEASE THAT ARE NOT  DESCRIPTIONS  OF HISTORICAL  FACTS
ARE  FORWARD-LOOKING  STATEMENTS  THAT ARE  SUBJECT TO RISKS AND  UNCERTAINTIES.
WORDS SUCH AS "EXPECT," "INTENDS," "BELIEVES,"  "ANTICIPATES," AND "LIKELY" ALSO
IDENTIFY FORWARD-LOOKING  STATEMENTS.  ACTUAL RESULTS MAY DIFFER MATERIALLY FROM
SUCH  FORWARD-LOOKING  STATEMENTS AS A RESULT OF A NUMBER OF FACTORS,  INCLUDING
BUT NOT LIMITED TO,  ACCEPTANCE  OF THE  COMPANY'S  PRODUCTS,  COMPETITION,  NEW
PRODUCTS AND TECHNOLOGICAL CHANGES, THE COMPANY'S DEPENDENCE UPON THIRD-PARTIES,
INTELLECTUAL  PROPERTY RIGHTS, FUTURE CAPITAL NEEDS, AND OTHER RISKS DETAILED IN
PERIODIC  REPORTS  FILED  BY  THE  COMPANY  WITH  THE  SECURITIES  AND  EXCHANGE
COMMISSION.


                                      ###


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